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Dr.Prepare 12V 100Ah LiFePO4 Battery, 10 Year Lifetime Lithium Battery, Low & High Temp Protection, Group 31, IP65, for RVs, Trolling Motors, Boats, Trailers, Home Backup Power

Featuring a 10-year product support and lifespan, the Dr.Prepare 12V 100Ah LiFePO4 battery is a reliable power solution for a wide range of applications — including RVs, trailers, trolling motors, boats, off-grid cabins, and emergency backup during power outages.

Built with Grade A cells and an upgraded Battery Management System (BMS) featuring low and high-temperature cut-off protection, this lithium battery delivers safe, consistent performance.

Description

【10-Year Lifespan & Built-in BMS】 Our Dr.Prepare 100Ah LiFePO4 battery offers a 10-year product support and lifespan. The advanced built-in BMS system provides 20+ layers of protection — including low- and high-temperature cut-off — to protect the battery during charging and discharging, even under extreme conditions. Plus, all internal battery cells are UL-tested and certified to ensure maximum safety and reliability.
【Upgrade to Dr.Prepare LiFePO4 Batteries】 Dr.Prepare lithium batteries outperform traditional lead-acid batteries with a longer lifespan of up to 10 years, compared to just 1–3 years for most SLA options. Weighing only 22 lbs, this 12V LiFePO4 battery is lighter and delivers more consistent power than standard SLA batteries. Plus, it features an integrated BMS for enhanced safety — a level of protection SLA batteries simply don’t offer.
【Series & Parallel Connections for Powerful Backup Power】 Dr.Prepare 12V 100Ah lithium battery supports both series and parallel configurations. Easily build a 24V, 36V, or 48V battery bank with series wiring, or expand your capacity to 12V 200Ah, 300Ah, or 400Ah through parallel connections. For larger setups, you can link up to 16 batteries in series and parallel to create a powerful 20.48 kWh home backup system—ideal for power outages or hurricane season.
【Trolling Motor, Solar RV, Home Backup】 When using the battery with a trolling motor, we highly recommend installing a 60A–100A circuit breaker between the battery and your device to prevent overdischarging. These LiFePO4 batteries are also perfect for RV solar setups, off-grid camping, and home backup power during outages or hurricane season.
【Charging & Discharging Tips】 The optimal charging current is 20A (max 50A). For safe and efficient charging, use a compatible AC-to-DC LiFePO4 battery charger or a solar panel system with a charge controller. The max continuous discharging current is 100A. After a full discharge at 100A, avoid immediate recharging at 50A, as it may trigger the high-temperature charging protection.
【Important Reminders】
1. Ensure the battery terminals are securely fastened. Loose terminals can lead to heat accumulation and potential battery damage.
2. After a full discharge at a continuous 100A, avoid immediate recharging at 50A, as this may trigger high-temperature charging protection.
3. Optimal charging involves a 20A current for our lithium battery. While the maximum charging current stands at 50A, exceeding this limit can result in a shortened battery lifespan.
Dr. Prepare batteries will be shipped from California, USA. We provide 10-year battery warranty and lifetime technical support. If you have any questions during usage, please feel free to contact us.

Key Features

10-Year Lifespan

20+ Protections

Low & High Temp Cut-Off

Series & Parallel

Emergency Backup Power

Package Includes

1 x 12V 100Ah Lithium Iron Phosphate (LiFePO4) Battery with Handheld Strap
1 x M8 Bolts (A Pair)

Specifications

100Ah LiFePO4 Lithium Deep Cycle Battery (S48) - Connect In Series
Technical Specifications
Model	DBT12100LFP-S48-G7-US
Nominal Voltage	12.8 V
Energy	1,280 Wh
Rated Capacity (0.2C)	100Ah
Cycle Life (0.2C, 25±5℃)	3,000 Cycles at 80% DOD
Maximum Continuous Discharge Current	100A
Maximum Charge Current	Optimal: 20A; Maximum: 50A
Max. Charging Voltage	14.6V
Discharge Cut-off Voltage	Lower than 11.1V
Self Discharge Rate	2% ~ 3% per month at 25℃ / 77℉
Over-Discharge Recovery Voltage	12.6V
Charging Temperature Range	0℃~45℃ / 32℉~113℉
Discharging Temperature Range	-10℃~60℃ / 14℉~140℉
Low Temperature Protection	Charging: -5℃～+5℃ / 23℉~41℉ Discharging: -25℃ ~ -15℃ / -13℉~5℉
High Temperature Protection	Charging: 60℃ ~ 70℃ / 140℉~158℉ Discharging: 70℃ ~ 80℃ / 158℉~176℉
Storage Temperature Range	-20℃~45℃ / -4℉~113℉ (Store for 1-3 months) -20℃~20℃ / -4℉~68℉ (Store for 1 year)
Recommended Operating Temperature	20℃ ~ 30℃ / 68℉~86℉
Terminal Bolt Size	Tailor-made M8
Internal Resistance	≤10mΩ
Weight	10 kg / 22 lbs
Dimension	332 x 220 x 172 mm / 13.07 x 8.66 x 6.77 in (L x H x W) Compatible with the Group 31 battery case

Why Isn’t the LED Display Accurate?

If the LED display isn’t showing the correct readings, you can try calibrating it by following these steps:
1. Discharge the battery completely to 0%.
2. Use a compatible LiFePO4 battery charger or solar charge controller to fully charge the battery.
If the issue persists, please contact us for further assistance.

What are the charging voltage and charging current for this battery?

The max. charging voltage is 14.6V and the max. charging current is 50A. For optimal charging performance, we highly recommend adjusting the voltage to 14.2V-14.6V and using a 20A charger.

Does this 12V 100Ah battery offer low-temperature protection?

Yes, it does. When the temp reaches -5℃~5℃, this lithium battery will stop being charged, and when the temp reaches -25℃~15℃, the battery will stop discharging. Ideal for harsh and rugged environments. It also has high temperature protection.

Does this battery have low voltage cut-off protection?

Yes, it does. When the discharge voltage is lower than 11.1V, the battery will shut off automatically.

Can I use my lead acid battery charger to charge the lithium battery?

We recommend using a lithium battery compatible AC to DC charger to charge LiFePO4 batteries, or else cause unreversible lifespan damage to the batteries. You can also charge these batteries using compatible solar charge controllers and solar panels.

Will the battery come with the terminals? And if not, what's the size of the connector terminals?

Yes, it comes with two M8 screw terminals.

Can I charge the battery directly using a solar panel?

No, you should not connect the solar panel directly to the battery. When charging this battery with a solar panel, make sure to use a solar charge controller (either PWM or MPPT) between the panel and the battery. Directly connecting the panel to the battery could result in unstable solar power, which may damage your devices.