Collection: BigBattery - Your Source For Power

Solar Off-Grid Lithium Battery Banks

BigBattery off-grid lithium battery banks are made from LiFePO4 cells, which are the best energy source because they store more energy than any other lithium or lead-acid battery. Our solar batteries are the lowest-priced energy source in the long run and are cheaper than lead-acid batteries. Lithium-ion batteries can also store almost 50 percent more energy than lead-acid batteries!Additionally, they work between 5,000 and 8,000 cycles vs. the old 500 cycles that a lead-acid battery would provide you. BigBattery off-grid solar batteries, made in the US, are the safest and most secure option for any solar application. With built-in BMS and numerous safety features, you can rest easy and let our solar battery do the work for you. We have 24V and 48V lithium solar batteries to fit you with the right system for your solar application!

Golf carts are among the many vehicles that reap massive benefits from lithium-ion batteries. Our lithium solutions will give you less weight, more power, shorter charging intervals, and zero maintenance over lead-acid batteries! This also means you can enjoy more mileage on a single charge with stronger acceleration up hills. Upgrade your golf cart to see the benefits for yourself!

Complete Systems-Lithium-Ion Kit Systems

BigBattery new Kit Systems. These lithium-ion upgrade kits provide you with a one-stop solution for getting your power system’s up and running quickly and painlessly.

Complete Systems

RV, Vans & Campers-Power To Create New Adventures

Advanced lithium RV & Van-life solutions reduce generator time and minimize charging periods. We also offer our RV batteries with inverters, so you have a one-stop shop for compatible accessories.

BigBattery RV, Vans & Campers Collection

Industrial Equipment-Move Your Team To New Levels

BigBattery industrial lithium-ion battery packs were designed as a plug-and-play option for electric commercial and industrial vehicles currently using lead-acid batteries.

Industrial Equipment

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  • WE LOVE THE ANDERSON CONNECTOR || Everything you need to know!

  • The Bird Is Back! BigBattery's 48V FLCN Elite || Lithium Golf Cart Battery

  • High Speed Lithium Battery Review & Range Test | Big Battery Falcon Elite 48v 122ah Golf Cart

  • Old Golf Cart Gets New Lithium 36v Battery & Its FASTER! | Big Battery Gator MAX 120AH

  • 36V GATOR MAX KIT PERFORMANCE BATTERY || One of our most versatile batteries!

  • Eagle 48v Lithium Golf Cart Battery Module Kit | Unboxing & Review

  • A BATTERY FOR YOUR BOAT?? || The 12V Seal

  • "UNBOXING" THE 12V SEAL || Inside a BigBattery Battery

  • The little battery that will chug along a get you the power you need, no matter the application.

FREQUENTLY ASKED QUESTIONS

Can your batteries be used in series?

We no longer offer our batteries for use in series.

Do your batteries have a thermal management system?

All of our batteries have a thermal management system that is controlled by the BMS (Battery Management System). This Thermal management system will not only prevent the battery from being used if the temperature is too high, but also if the temperature is also too low.

Can I use my OEM charger?

No. Lead acid battery chargers charge at different currents and voltages than our lithium batteries. Using your OEM charger can damage your battery cells and void your battery’s 10 year warranty. We have several chargers optimized for and calibrated to every battery we sell.

Why does the voltage drop when unplugging the charger?

The voltage drop that you experienced is called the “bubble voltage” and is perfectly normal for Lithium Batteries. LiFePO4 batteries behave differently than other battery chemistries. The Voltage vs Capacity is not linear. For example, if you have a voltage between (13.3 - 14.6) or (26.6 - 29.2) or (53.6 - 58.4)  you will have more than 99% of the capacity. This essentially means that “Bubble Voltage” contains less than 1% of the entire capacity and the drop when a load is placed is instant.

Can I leave my batteries outside?

No. Our batteries are not marine rated or weather proof, so leaving them out under the sun all day or in the rain can damage the batteries. (This type of damage is not covered under the 10 year warranty.

How many years will my battery last?

Lithium Iron Phosphate (LifePO4) batteries can be cycled from 3000 to 7000 times. If you cycle the battery daily with an 80% DoD (Depth of Discharge), then you can get even more than 10 years of use from your battery.

Is BigBattery compatible with all Inverters and Charger Controllers?

Our batteries work great with almost all inverter/charger controller brands. The only brand we are not compatible with is RENOGY. Please confirm that your inverter can be set to the operating parameters of the battery you’re interested in before purchasing. Parameters can be found as a downloadable PDF spec sheet on every battery product page.

How do I install my battery?

All of our batteries come with free ring terminals that can be used to connect your battery to your inverter, cart, or busbar system. We also sell a parallel busbar that can be used in tandem with the included ring terminals to parallel multiple batteries.

What is the difference between the 12 A and the Upgraded Charger?

Upgraded Charger:

  • Charging Current: 15A
  • Input Voltage: 110V / 220V
  • Output Voltage: 58.8v
  • Charging Time: 5 h (approx)
  • On-Board Charger: Yes
  • Protection: IP65

Does Big Battery sell used/surplus batteries?

In the past Big Battery sold refurbished batteries, such as solar batteries made from recertified Nissan Leaf modules. As of the year 2020, all batteries sold are new, never-previously-cycled batteries that come with a complimentary 10 year warranty.

How long before my order ships?

It can take anywhere from a week to no more than two weeks for shipment. This time allows us to assemble, test, and inspect each battery prior to shipping.

Why does shipment take so long?

We build every battery upon order, so shipment may take anywhere from a week to no more than two weeks.This is to allow us to assemble, test, and inspect every unit prior to shipment.

What does your 10 year warranty cover?