Rolls S12‑100LFP S‑Series 12 V Lithium‑Iron‑Phosphate ESS Battery

$589.99

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The Rolls S12-100LFP from the S-Series offers advanced Lithium Iron Phosphate (LiFePO4) technology in a Group 24 form factor, making it a drop-in replacement for standard VRLA batteries. With over 6000 cycles at 80% depth of discharge, this 12.8V battery delivers long-lasting, maintenance-free power for energy storage systems and off-grid applications. It includes built-in Bluetooth for real-time monitoring via iOS and Android apps, and supports both series (up to 48V) and parallel configurations.

This robust energy solution features a highly integrated Battery Management System (BMS) with protection against short circuit, over/under voltage, temperature extremes, and charge imbalance. Housed in a durable ABS case rated IP65, the battery also includes visual SOC display, internal heating for cold climates, and stainless M8 hardware for secure connections. Certified to IEC, CE, ROHS, and UN38.3 standards, it ensures reliable and safe operation across demanding environments.

Key Features

High Cycle Life: Over 6000 cycles at 80% DoD and 3000+ at 100% DoD for long-term performance.
Safe and Certified: Cylindrical LiFePO4 cells with UL1642, IEC62619, UN38.3, CE, and ROHS certifications.
Integrated BMS: Built-in protection for over-voltage, over-current, short-circuit, and temperature extremes.
Smart Connectivity: Bluetooth-enabled with iOS & Android app for live state-of-charge (SOC) monitoring.
Temperature-Tolerant: Internal heating allows charging in cold climates down to -20°C.
Compact and Compatible: Standard BCI Group 24 ABS container for direct VRLA battery replacement.
Fast Charging: Supports up to 100A continuous charge/discharge with 800A surge tolerance (300ms).
Maintenance-Free: Sealed design with no need for regular upkeep or fluid checks.
Flexible Configuration: Supports up to 4S4P (48V) or 1S6P (12V) system connections.
IP65 Rated: Durable housing for resistance to dust and water ingress in rugged environments.

Specifications

Weight	11.8 kg	26.0 lbs
Length	266 mm	10.47"
Width	177 mm	6.97"
Height	228 mm	8.98"
Height Incl. Term.	234 mm	9.25"
Product measurements & weights are calculated based on sample data. Individual specifications are subject to vary due to the manufacturing process & battery components.

Container	ABS
Cover	ABS
Handles	Integrated Top Mount
Internal BMS Model	4S100ATX-V2
Expected Cycle Life	>6000 @ 80% DOD, >3000 @ 100% DOD
Series Connection	4 UNITS MAX (48V)
Parallel Connection	4 UNITS MAX (48V) or 6 UNITS MAX (12V)
Connectivity	Up to 4S4P (in 48V configuration) or 1S6P (in 12V configuration)

Series	S-SERIES LFP	Warranty	See Warranty Terms
Volts	12	Design	Grp 24
Terminal Type		M8
Included Hardware		M8 stainless bolts & washers

Charge | Discharge

Charge Voltage Range

14.0 - 14.6V

Recommended End of Discharge Voltage

12.0 V

End of Discharge Protection Voltage

10.0 V

Recommended Charge Voltage

14.4 V

Recommended Charge Current

-20~0°C (-4-32°F)	0.1C	10A
0~10°C (32-50°F)	0.2C	20A
10~35°C (50-95°F)	0.5C	50A
35~50°C (95-122°F)	0.2C	20A

Charge Mode:

Charge at recommend voltage & current by temperature until charge current drops to ≤ 0.05C (CC,CV)
DO NOT USE TEMPERATURE COMPENSATION
No BTS (Battery Temperature Sensor)

Max Continuous Charge Current

100 A

Max Continuous Discharge Current

100 A

Surge Current Limit

800 A (300ms)

Charge Temperature Range

-20°C~55°C (-4~131°F)

Discharge Temperature Range

-20°~60°C (-4~140°F)

Storage Temperature Range

-5°~45°C (23~113°F)

Capacity

Nominal Capacity	100 AH
Total Energy	1.28 kWh
Nominal Voltage	12.8 V

Safety

Cylindrical LiFePO4 cells [ITR26-70/40E 4Ah, 26700] (UL1642)
IEC62133 (cell), IEC62619(cell), UN38.3 (cell/pack)
ROHS (cell), CE system certification, IP65 Rating

Design

Standard-size (BCI) ABS container for easy VRLA replacement
Fast charge/discharge performance
Display & integrated controls
Visual state-of-charge (SOC)
External fuse access
Internal heating for -20°C (-4°F) to 0°C (32°F) charging *
Bluetooth Connectivity & dedicated IOS & Android App
Maintenance-free operation

* Note: When connected in series, internal heating may increase charge imbalance requiring external rebalancing.

Battery Management System (BMS)

Integrated hardware BMS inside

Independent charge & discharge protection
Balance Protection
Short-Circuit Protection, Over-Voltage Protection, Low-Voltage Protection, Over-Current Protection, Low-Temperature Protection, Over-Temperature Protection

Document Library

Download Specifications

12V LFP Profile

Battery User Manual – [Rolls Flooded Lead-Acid, VRLA AGM & OPzV GEL Batteries]

Rolls Battery Railroad & Diesel Starter Battery User Manual

Rolls R-Series & S-Series LFP Drop-in Battery Operating Manual

Rolls S48-100LFP ESS Battery Operating Manual

Shipping Information

FREE & FAST SHIPPING SAVE Hundreds Today with Free Shipping on All Orders. We Ship to ALL 48 Lower States (We do not ship to Puerto Rico, Hawaii, Alaska)

Lead Time - 3-7 Business Days Depending on Product - Once You Place an Order, We immediately begin processing, the order request is sent to our warehouse and is prepared for pickup, it then usually takes around 3-7 business days to be picked up for transit.

Transit Time - Transit Time can vary depending on the distance between your location and the warehouse but you can expect the item to arrive between 3-8 business days after pickup.

Our Shipping Partners: FedEx, UPS, Freight Club (among others)

Shipping Partners
We partner with the most reliable freight companies in the USA to ensure your order arrives safe and in a timely manner.

Your Item will ship from warehouses all across the United States to ensure fast and efficient delivery times for our customers.

If there are any delays regarding your product shipment, we will let you know in advance.

Order Confirmation:

As soon as you place your order, you will receive an order confirmation e-mail. (please allow a few hours for this to come through in some cases) This means that we have received your order in our system and pre-authorized your credit card for the purchase.

As soon as we receive your order, we automatically reach out to our suppliers to confirm that it is in stock and available for immediate shipment.

If your item is on backorder or unavailable, we will void the pre-authorization and reach out to you via e-mail. If your item(s) are available for immediate shipment (within 5 business days), we will process the charges and submit the order for shipment.

Order Shipment:

If your order is in stock and we process the charges to your credit card, it will ship within five business days from the date of your order. We will send you tracking information within 24 hours of your order leaving the warehouse to the e-mail address you provided when checking out. If you do not receive tracking information from us within six business days of your order, feel free to follow up with us at sales@buildthepower.com

No Shipping outside the USA. (Some exceptions apply - if the website permits you to check out and enter your shipping address, you will receive your order. Some products in particular are available in Canada).

Shipping Options

Our base "Curb-side" Pickup shipping is always completely free! This option usually takes between 5-15 days to arrive at your doorstep, after you have submitted your order.

Threshold Shipping: This involves the item being brought onto your porch, or into a sheltered/garage area.

Double-Check Your Address

To ensure that your package is properly delivered and that you receive your package within the time frames we advertise, please
make sure that your address is correctly entered and includes all relevant and/or required information. The use of correct
abbreviations, street numbers, building or apartment numbers, and route information (if applicable) is critical for ensuring
timely delivery. We do not take responsibility for lost, misplaced, or incorrectly delivered shipments if the address information
provided is incorrect or incorrectly entered at the time of purchase.

Damages

Please inspect the packaging of your item(s) when they arrive, if you notice any damage, you should make note of it when signing for delivery. If your item(s) do arrived damaged please send photos of damage, box and SKU, along with a brief description of the damage to sales@buildthepower.com and we will process an insurance claim on your behalf. Photos and videos must be sent for freight damage within 24 hours of arrival or the freight damage claim will not be valid. Any punctures, or visible signs of exterior damage must be reported within 24 hours.

Warranty

10 Years

Return Information

We have a 30-day return policy, which means you have 30 days after receiving your item to request a return.

Should you decide to cancel your order prior to its shipment, a 3% deduction will be applied to cover platform fee expenses from the total paid amount.

To be eligible for a return, your item must be in the same condition that you received it, unworn or unused, with tags, and in its original packaging. You’ll also need the receipt or proof of purchase. Items that are not in this condition will not be accepted.

To start a return, you can contact us at sales@buildthepower.com If your return is accepted, we'll send you a return shipping label, as well as instructions on how and where to send your package. Items sent back to us without first requesting a return will not be accepted.

Returns for reasons other than damaged items will require a 15-25% re-stocking fee, this depends on the size and freight cost of the item to ship back, we sell large items and shipping can be costly.

Returns/Cancellations after the item has shipped will also incur a 15-25% fee charged to you, as freight costs can be high for our products.

If your return is outside of the 30 day return period, your item will not be accepted.

You can always contact us for any return questions at sales@buildthepower.com.

Damages and issues

Please inspect your order upon reception and contact us immediately if the item is defective, damaged or if you receive the wrong item so that we can evaluate the issue and make it right.

Items that are damaged must be communicated to us within 24 hours of receiving the item.

Please note that if items have been taken out of the packaging and/or installed, returns may be voided depending on the manufacturer.

Some of our manufacturers do not accept returns for specific items, this must be considered when purchasing.

Exchanges
The fastest way to ensure you get what you want is to return the item you have, and once the return is accepted, make a separate purchase for the new item.

Refunds
We will notify you once we’ve received and inspected your return, and let you know if the refund was approved or not. If approved, you’ll be automatically refunded on your original payment method. Please remember it can take some time for your bank or credit card company to process and post the refund too.

Contact Information

You can contact us using the methods below.

US Customer Support Number: +1 507 636 3614
Email: sales@buildthepower.com

Description

The Rolls S12-100LFP from the S-Series offers advanced Lithium Iron Phosphate (LiFePO4) technology in a Group 24 form factor, making it a drop-in replacement for standard VRLA batteries. With over 6000 cycles at 80% depth of discharge, this 12.8V battery delivers long-lasting, maintenance-free power for energy storage systems and off-grid applications. It includes built-in Bluetooth for real-time monitoring via iOS and Android apps, and supports both series (up to 48V) and parallel configurations.

This robust energy solution features a highly integrated Battery Management System (BMS) with protection against short circuit, over/under voltage, temperature extremes, and charge imbalance. Housed in a durable ABS case rated IP65, the battery also includes visual SOC display, internal heating for cold climates, and stainless M8 hardware for secure connections. Certified to IEC, CE, ROHS, and UN38.3 standards, it ensures reliable and safe operation across demanding environments.

Key Features

High Cycle Life: Over 6000 cycles at 80% DoD and 3000+ at 100% DoD for long-term performance.
Safe and Certified: Cylindrical LiFePO4 cells with UL1642, IEC62619, UN38.3, CE, and ROHS certifications.
Integrated BMS: Built-in protection for over-voltage, over-current, short-circuit, and temperature extremes.
Smart Connectivity: Bluetooth-enabled with iOS & Android app for live state-of-charge (SOC) monitoring.
Temperature-Tolerant: Internal heating allows charging in cold climates down to -20°C.
Compact and Compatible: Standard BCI Group 24 ABS container for direct VRLA battery replacement.
Fast Charging: Supports up to 100A continuous charge/discharge with 800A surge tolerance (300ms).
Maintenance-Free: Sealed design with no need for regular upkeep or fluid checks.
Flexible Configuration: Supports up to 4S4P (48V) or 1S6P (12V) system connections.
IP65 Rated: Durable housing for resistance to dust and water ingress in rugged environments.

Specifications

Weight	11.8 kg	26.0 lbs
Length	266 mm	10.47"
Width	177 mm	6.97"
Height	228 mm	8.98"
Height Incl. Term.	234 mm	9.25"
Product measurements & weights are calculated based on sample data. Individual specifications are subject to vary due to the manufacturing process & battery components.

Container	ABS
Cover	ABS
Handles	Integrated Top Mount
Internal BMS Model	4S100ATX-V2
Expected Cycle Life	>6000 @ 80% DOD, >3000 @ 100% DOD
Series Connection	4 UNITS MAX (48V)
Parallel Connection	4 UNITS MAX (48V) or 6 UNITS MAX (12V)
Connectivity	Up to 4S4P (in 48V configuration) or 1S6P (in 12V configuration)

Series	S-SERIES LFP	Warranty	See Warranty Terms
Volts	12	Design	Grp 24
Terminal Type		M8
Included Hardware		M8 stainless bolts & washers

Charge | Discharge

Charge Voltage Range

14.0 - 14.6V

Recommended End of Discharge Voltage

12.0 V

End of Discharge Protection Voltage

10.0 V

Recommended Charge Voltage

14.4 V

Recommended Charge Current

-20~0°C (-4-32°F)	0.1C	10A
0~10°C (32-50°F)	0.2C	20A
10~35°C (50-95°F)	0.5C	50A
35~50°C (95-122°F)	0.2C	20A

Charge Mode:

Charge at recommend voltage & current by temperature until charge current drops to ≤ 0.05C (CC,CV)
DO NOT USE TEMPERATURE COMPENSATION
No BTS (Battery Temperature Sensor)

Max Continuous Charge Current

100 A

Max Continuous Discharge Current

100 A

Surge Current Limit

800 A (300ms)

Charge Temperature Range

-20°C~55°C (-4~131°F)

Discharge Temperature Range

-20°~60°C (-4~140°F)

Storage Temperature Range

-5°~45°C (23~113°F)

Capacity

Nominal Capacity	100 AH
Total Energy	1.28 kWh
Nominal Voltage	12.8 V

Safety

Cylindrical LiFePO4 cells [ITR26-70/40E 4Ah, 26700] (UL1642)
IEC62133 (cell), IEC62619(cell), UN38.3 (cell/pack)
ROHS (cell), CE system certification, IP65 Rating

Design

Standard-size (BCI) ABS container for easy VRLA replacement
Fast charge/discharge performance
Display & integrated controls
Visual state-of-charge (SOC)
External fuse access
Internal heating for -20°C (-4°F) to 0°C (32°F) charging *
Bluetooth Connectivity & dedicated IOS & Android App
Maintenance-free operation

* Note: When connected in series, internal heating may increase charge imbalance requiring external rebalancing.

Battery Management System (BMS)

Integrated hardware BMS inside

Independent charge & discharge protection
Balance Protection
Short-Circuit Protection, Over-Voltage Protection, Low-Voltage Protection, Over-Current Protection, Low-Temperature Protection, Over-Temperature Protection

Document Library

Download Specifications

12V LFP Profile

Battery User Manual – [Rolls Flooded Lead-Acid, VRLA AGM & OPzV GEL Batteries]

Rolls Battery Railroad & Diesel Starter Battery User Manual

Rolls R-Series & S-Series LFP Drop-in Battery Operating Manual

Rolls S48-100LFP ESS Battery Operating Manual

Shipping Information

FREE & FAST SHIPPING SAVE Hundreds Today with Free Shipping on All Orders. We Ship to ALL 48 Lower States (We do not ship to Puerto Rico, Hawaii, Alaska)

Lead Time - 3-7 Business Days Depending on Product - Once You Place an Order, We immediately begin processing, the order request is sent to our warehouse and is prepared for pickup, it then usually takes around 3-7 business days to be picked up for transit.

Transit Time - Transit Time can vary depending on the distance between your location and the warehouse but you can expect the item to arrive between 3-8 business days after pickup.

Our Shipping Partners: FedEx, UPS, Freight Club (among others)

Shipping Partners
We partner with the most reliable freight companies in the USA to ensure your order arrives safe and in a timely manner.

Your Item will ship from warehouses all across the United States to ensure fast and efficient delivery times for our customers.

If there are any delays regarding your product shipment, we will let you know in advance.

Order Confirmation:

As soon as you place your order, you will receive an order confirmation e-mail. (please allow a few hours for this to come through in some cases) This means that we have received your order in our system and pre-authorized your credit card for the purchase.

As soon as we receive your order, we automatically reach out to our suppliers to confirm that it is in stock and available for immediate shipment.

If your item is on backorder or unavailable, we will void the pre-authorization and reach out to you via e-mail. If your item(s) are available for immediate shipment (within 5 business days), we will process the charges and submit the order for shipment.

Order Shipment:

If your order is in stock and we process the charges to your credit card, it will ship within five business days from the date of your order. We will send you tracking information within 24 hours of your order leaving the warehouse to the e-mail address you provided when checking out. If you do not receive tracking information from us within six business days of your order, feel free to follow up with us at sales@buildthepower.com

No Shipping outside the USA. (Some exceptions apply - if the website permits you to check out and enter your shipping address, you will receive your order. Some products in particular are available in Canada).

Shipping Options

Our base "Curb-side" Pickup shipping is always completely free! This option usually takes between 5-15 days to arrive at your doorstep, after you have submitted your order.

Threshold Shipping: This involves the item being brought onto your porch, or into a sheltered/garage area.

Double-Check Your Address

To ensure that your package is properly delivered and that you receive your package within the time frames we advertise, please
make sure that your address is correctly entered and includes all relevant and/or required information. The use of correct
abbreviations, street numbers, building or apartment numbers, and route information (if applicable) is critical for ensuring
timely delivery. We do not take responsibility for lost, misplaced, or incorrectly delivered shipments if the address information
provided is incorrect or incorrectly entered at the time of purchase.

Damages

Please inspect the packaging of your item(s) when they arrive, if you notice any damage, you should make note of it when signing for delivery. If your item(s) do arrived damaged please send photos of damage, box and SKU, along with a brief description of the damage to sales@buildthepower.com and we will process an insurance claim on your behalf. Photos and videos must be sent for freight damage within 24 hours of arrival or the freight damage claim will not be valid. Any punctures, or visible signs of exterior damage must be reported within 24 hours.

Warranty

10 Years

Return Information

We have a 30-day return policy, which means you have 30 days after receiving your item to request a return.

Should you decide to cancel your order prior to its shipment, a 3% deduction will be applied to cover platform fee expenses from the total paid amount.

To be eligible for a return, your item must be in the same condition that you received it, unworn or unused, with tags, and in its original packaging. You’ll also need the receipt or proof of purchase. Items that are not in this condition will not be accepted.

To start a return, you can contact us at sales@buildthepower.com If your return is accepted, we'll send you a return shipping label, as well as instructions on how and where to send your package. Items sent back to us without first requesting a return will not be accepted.

Returns for reasons other than damaged items will require a 15-25% re-stocking fee, this depends on the size and freight cost of the item to ship back, we sell large items and shipping can be costly.

Returns/Cancellations after the item has shipped will also incur a 15-25% fee charged to you, as freight costs can be high for our products.

If your return is outside of the 30 day return period, your item will not be accepted.

You can always contact us for any return questions at sales@buildthepower.com.

Damages and issues

Please inspect your order upon reception and contact us immediately if the item is defective, damaged or if you receive the wrong item so that we can evaluate the issue and make it right.

Items that are damaged must be communicated to us within 24 hours of receiving the item.

Please note that if items have been taken out of the packaging and/or installed, returns may be voided depending on the manufacturer.

Some of our manufacturers do not accept returns for specific items, this must be considered when purchasing.

Exchanges
The fastest way to ensure you get what you want is to return the item you have, and once the return is accepted, make a separate purchase for the new item.

Refunds
We will notify you once we’ve received and inspected your return, and let you know if the refund was approved or not. If approved, you’ll be automatically refunded on your original payment method. Please remember it can take some time for your bank or credit card company to process and post the refund too.

Contact Information

You can contact us using the methods below.

US Customer Support Number: +1 507 636 3614
Email: sales@buildthepower.com

what’s included

The E2000LFP Expandable Power Station combines power and flexibility in a portable package. Link it with two EB3000 battery packs to reach an impressive 8064Wh capacity - enough for almost any power need.

With 2000W AC output, it runs most household devices and tools without breaking a sweat. The advanced LiFePo4 batteries deliver outstanding durability, keeping 80% capacity even after 3500 charging cycles.

Charging is quick and flexible. The station accepts up to 1300W input across multiple ports, with 600W maximum solar input. Using solar panels, you'll fully charge in 2-3 hours. Need it faster? Dual AC adapters cut that time to just 1.5-2 hours.

Specification

The E2000LFP Expandable Power Station combines power and flexibility in a portable package. Link it with two EB3000 battery packs to reach an impressive 8064Wh capacity - enough for almost any power need.

With 2000W AC output, it runs most household devices and tools without breaking a sweat. The advanced LiFePo4 batteries deliver outstanding durability, keeping 80% capacity even after 3500 charging cycles.

Charging is quick and flexible. The station accepts up to 1300W input across multiple ports, with 600W maximum solar input. Using solar panels, you'll fully charge in 2-3 hours. Need it faster? Dual AC adapters cut that time to just 1.5-2 hours.

Shipping & Delivery

The E2000LFP Expandable Power Station combines power and flexibility in a portable package. Link it with two EB3000 battery packs to reach an impressive 8064Wh capacity - enough for almost any power need.

With 2000W AC output, it runs most household devices and tools without breaking a sweat. The advanced LiFePo4 batteries deliver outstanding durability, keeping 80% capacity even after 3500 charging cycles.

Charging is quick and flexible. The station accepts up to 1300W input across multiple ports, with 600W maximum solar input. Using solar panels, you'll fully charge in 2-3 hours. Need it faster? Dual AC adapters cut that time to just 1.5-2 hours.

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