Batteries

------------- 48V LiFePO4 Batteries ---------------

48V LiFePO4 Prebuilt Batteries

These are some great value and high quality sources for 48V server rack solutions. 48V server rack battery systems are the lowest cost and easiest way to build a powerful battery backup system. I recommend LiFePo4 battery chemistry, you will get the most cycles and longest life.

EG4-WallMount Indoor Battery | 48V 280Ah | 14.3kWh | Heated

EG4-WallMount Indoor Battery | 48V 280Ah | 14.3kWh | Indoor | Heated UL1973, UL9540A | 10-Year Warranty

For indoor installation, this is the best value package. One battery will be sufficient for supporting a fridge and emergency circuits for at least 24hours.

Use the link below and the discount code "EVERYDAYGET50" for a $50 DISCOUNT on any purchase of $500 or more! (Code is valid for a limited time)

Purchase from Signature Solar.open_in_new

EG4 Indoor Buildable Conduit Box | For EG4 100Ah Wallmount and EG4 6000XP

Nice conduit box to manage all the battery wiring.
Use the link below and the discount code "EVERYDAYGET50" for a $50 DISCOUNT on any purchase of $500 or more! (Code is valid for a limited time)

Purchase from Signature Solar.open_in_new

EG4 PowerPro WallMount AllWeather | 48V 280Ah | 14.3kWh LiFePO4

EG4 PowerPro WallMount AllWeather Lithium Battery | 48V 280Ah | 14.3kWh LiFePO4 | All-Weather Energy Storage | UL1973, UL9540A | 10-Year Warranty

If you need to mount your batteries out doors, this is the best value package. One battery will be sufficient for supporting a fridge and emergency circuits for at least 24hours.

Use the link below and the discount code "EVERYDAYGET50" for a $50 DISCOUNT on any purchase of $500 or more! (Code is valid for a limited time)

Purchase from Signature Solar.open_in_new

EG4-WallMount Indoor Battery | 48V 280Ah | 14.3kWh | Heated

EG4-WallMount Indoor Battery | 48V 280Ah | 14.3kWh | Indoor | Heated UL1973, UL9540A | 10-Year Warranty

For indoor installation, this is the best value package. One battery will be sufficient for supporting a fridge and emergency circuits for at least 24hours.

Current Connected still has these in stock, get them while you can...
Use the exclusive code "dave" to get free shipping for the month of August.

Purchase from Current Connected.open_in_new

Pytes V5 48V 100Ah 5.12kWh LiFePO4 Server Rack Battery, Heated UL 9540 Lithium Battery

This is the new recommendation for server rack batteries. They install basically the same as the SOK batteries in my video. These include heating.

Purchase through Current Connected. open_in_new

Pytes V5 48V 15.36kWh Bundle with V-Box-IC Rack

Bundle & Save by purchasing batteries and racking together. This 15.3kWH power solution is ready to go when you need it and where you need it. You can also check on it anytime from anywhere via an easy to use phone app. This kit can store your solar power and feed your inverter with up to 300 peak amps on demand, while remaining portable in a well ventilated rolling rack. If you are looking for backup power or want to peak shave, this system fits the role with style.  A set of 4/0 cables is included, which means this kit is ready to connect into practically any inverter.

Purchase through Current Connected.open_in_new

EG4-LifePower4 Lithium Battery | 48V 100AH | Server Rack Battery | UL1973

Best value solution. Quality construction. No screen interface. Built in BMS with temperature sensors.

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EG4-LifePower4 Lithium Batteries Kit | 30.72kWh | 6 Server Rack Batteries With Free Pre-Assembled Enclosed Rack | With Door & Wheels

Bundle & Save by purchasing batteries and racking together. This is the best price for the capacity.

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EG4-LL Lithium Battery (V2) | 48V 100AH | Server Rack Battery | UL1973

Similar to SOK battery. Quality construction. Built in BMS with temperature sensors. Built in screen for easy monitoring and control.

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EG4 3 Slot Server Rack 48V Battery Kit - SKU: 1511229

Two pre-assembled versions available with EG4 LifePower4 V2 batteries or EG4 LL-S Batteries.
Up to 15.3 kilowatt-hours of total capacity
E-Stop (Emergency Stop) rapid shutdown (RSD) functionality for fail-safe operation in high-risk environments
UL 1973 Recognized Component, UL 9540A (passed), UL 9540 Listed with 18kPV-12LV
Dual on-board fire arrestors for added safety during operation
EG4 LL-S: On-board LCD screen
EG4 LifePower4 V2: Enhanced terminal connections with two positive and two negative terminals
Use the link below and the discount code "EVERYDAYGET50" for a $50 DISCOUNT on any purchase of $500 or more! (Code is valid for a limited time)

Click here to purchase from Signature Solaropen_in_new

EG4-LL Lithium Batteries Kit (V2) | 30.72kWh | 6 Server Rack Batteries With Free Pre-Assembled Enclosed Rack | With Door & Wheels

Bundle & Save by purchasing batteries and racking together. This package includes the batteries with built in screens like the SOK system.

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48V Battery Kits

Yixyang/YixEnergy 48V Vertical Box 16s V19 BMS Lifepo4 Home Energy Storage

My favorite DIY configuration is this vertical case with 314Ah EVE cells and the 200A active balancing JK-BMS.
This case has a breaker and a fuse and the build quality is very good.
$20 Discount code "Dave"

JK BMS with EG4 12KPV/18KPV settings: https://projectswithdave.com/wp-content/uploads/2025/11/JK-BMS-_EG4_Settings.png

Click here to purchase.open_in_new

YIXIANG V2 48v Battery Diy Kit Box With JK 200A BMS for 280Ah, 314Ah, LiFePO4 Battery Cells

This is a great case, it is designed to work with double bolt mounts on the Cells. See the Yixiang cell listing below.
$20 Discount code "Dave"
Contact Becky with questions: [email protected]

JK BMS with EG4 12KPV/18KPV settings: https://projectswithdave.com/wp-content/uploads/2025/11/JK-BMS-_EG4_Settings.png

Click here to purchase.open_in_new

YIXIANG V2 48v Battery Bottom Trolley Rolling Base

This base is for the Yixiang/ YixEnergy batter listed above. It is very robust and rolls easily.
$20 Discount code "Dave"
Contact Becky with questions: [email protected]

Click here to purchase.open_in_new

YIXIANG Double Bolt EVE Battery Cells

I used the 314Ah EVE MB31 Cells in my build and the capacity was 325Ah. Great result!
$20 Discount code "Dave"
Contact Becky with questions: [email protected]

Click here to purchase.open_in_new

Basen Green 48V Battery Kit US/European Stock

DIY 48V Kit With 16s EVE 314ah Cells & Active Balancing. Now available with JK BMS and multiple brands of cells for reduced cost. I prefer the JK BMS for control, but the house brand BMS works fine.
Basen Green BMS Settings Information Sheet link: https://drive.google.com/file/d/1wIeBgn6hDA_-3M65CVboahOIJMZaSi4L/view?usp=sharing BMS
Software link: https://drive.google.com/file/d/16hyQabxsteoz9PFU_uknw2FMX9dhWmd-/view?usp=sharing

JK BMS with EG4 12KPV/18KPV settings: https://projectswithdave.com/wp-content/uploads/2025/11/JK-BMS-_EG4_Settings.png

Click here to purchase US stock.open_in_new

Basen Green 48V Battery Kit- Alibaba

DIY 48V Kit With Active Balancing - Case only, or multiple battery options.
Basen Green BMS Settings Information Sheet link: https://drive.google.com/file/d/1wIeBgn6hDA_-3M65CVboahOIJMZaSi4L/view?usp=sharing BMS
Software link: https://drive.google.com/file/d/16hyQabxsteoz9PFU_uknw2FMX9dhWmd-/view?usp=sharing

JK BMS with EG4 12KPV/18KPV settings: https://projectswithdave.com/wp-content/uploads/2025/11/JK-BMS-_EG4_Settings.png

Click here to purchase through Alibaba.open_in_new

EEL 48V Battery Cases

Several vertical and horizontal case options with stock in US and EU.
Use discount code "DAVE" for $10 off.

Click here to purchase.open_in_new

----------- 12V LiFePO4 Battery Options -------------

12V Battery Kits

EEL 12V Lifepo4 Battery DIY Box New Kits with Bluetooth 200A JK Active Balance BMS Set USA Stock

Case only, source the cells using the options below in the "LiFePO4 Raw Cells" section.
Great case! Quality built, includes 200A JK-BMS
Use discount code "DAVE" for $10 off.

Click here to purchase from EEL.open_in_new

EEL 12V Lifepo4 Battery DIY Box New Kits with Bluetooth 200A JK Active Balance BMS Set USA Stock

Case with LiFePO4 cells. Options include 230Ah, 280Ah, 310Ah.
Great case! Quality built, includes 200A JK-BMS
Use discount code "DAVE" for $10 off.

Click here to purchase from EEL.open_in_new

LiFePO4 Raw Cells

I have been working on a source for reliable prism cells. I recommend LiFePo4 battery chemistry for home backup solutions. You will get the most cycles, longest life and good stability. I have tested the Grade A EVE cells listed below they exceeded their rated capacity. I plan to issue a video soon on the results. They batteries come with insulating panels and bus bars. The bus bars are ridged, I recommend you replace them with flexible ones like those listed below.

EVE MB30 306Ah 3.2V LiFePO4 Cells | 10000 Cycles Brand New Grade A+ | for EV's and Solar System Battery Backup

These are the cells I would use for any new DIY battery build.
These are EVE 306Ah cells shipped from a US warehouse for quick delivery. Or from China for lower cost.
I have tested these Grade A EVE cells, and they exceeded their rated capacity coming in at 330.8Ah!
Using my link below automatically populates the discount code dave5 for an additional 5% discount.
There is a $30 financial transaction fee, so the more you purchase at one time the lower the cost.
Shipping and taxes are included in the price for US stock. Shipping is extra for China shipped products.
Here is a short video with the test results: https://youtube.com/shorts/6i5ugfKyivE?feature=share
If you have any issues, please send me an email from the about page: https://projectswithdave.com/projectswithdave.com/about/

Click here for discount affiliate link.open_in_new

EVE MB31 314Ah 3.2V LiFeP04 Battery | 10000 Cycles Brand New Grade A+ | for EV's and Solar System Battery Backup

These 314Ah cells ship from a US warehouse for quick delivery. Or from China for lower cost.
I have tested the 280Ah cells listed above, and they exceeded their rated capacity, I have not tested the 314Ah cells yet.
Using my link below automatically populates the discount code dave5 for an additional 5% discount.
There is a $30 financial transaction fee, so the more you purchase at one time the lower the cost.
Shipping and taxes are included in the price for US stock. Shipping is extra for China shipped products. If you have any issues, please send me an email from the about page: https://projectswithdave.com/projectswithdave.com/about/

Click here for discount affiliate link.open_in_new

EVE LF280K 280Ah LiFePO4 Battery cells 3.2V | Grade A 6000+ cycles | for EV's and Solar System Battery Backup

These 280Ah cells ship from a US warehouse for quick delivery. Or from China for lower cost.
I have tested these Grade A EVE cells, and they exceeded their rated capacity.
Using my link below automatically populates the discount code dave5 for an additional 5% discount.
There is a $30 financial transaction fee, so the more you purchase at one time the lower the cost.
Shipping and taxes are included in the price for US stock. Shipping is extra for China shipped products.
Here is a project video with a build and test using these cells: https://youtu.be/MSABYAhzA3g
If you have any issues, please send me an email from the about page: https://projectswithdave.com/projectswithdave.com/about/

Click here for discount affiliate link.open_in_new

Flexible Cooper Bus Bars

Flexible Cooper Bus Bars Connector Nickel Plate Pitch Row Lifepo4 Cell Lithium battery Busbar (4, Pitch Row 2.9in)

Click here to purchase on Amazon.open_in_new

JKBMS Smart BMS for 12V Battery

JKBMS Smart BMS with Heat CAN RS485 4S-8S 12V-24V 200A 2A Active Balance BMS with Bluetooth Battery Protection Board for LiFePO4 Li-ion LTO Battery Pack (JK-B2A8S20P-Heat-CAN)

Click here to purchase on Amazon.open_in_new

JKBMS Smart BMS for 48V Battery

JKBMS Smart BMS with Heat CAN RS485 8S-20S 200A 2A Active Balance with Bluetooth Battery Protection Board for LiFePO4 Li-ion LTO Battery Pack (JK-B2A20S20P-HC)

Click here to purchase on Amazon.open_in_new

12V LiFePo4 Batteries

There are lots of options for 12V batteries. The ones listed below are ones that I have high confidence in and are either great value or high quality solutions. I recommend LiFePo4 battery chemistry, you will get the most cycles and longest life.

Renogy 12.8V 104Ah Super Slim Solid State Lithium Iron Phosphate Battery

This is a semi-solid state battery. I don't know of any consumer grade full solid state batteries. The reduced electrolyte brings some impressive characteristics, watch my testing video here: https://youtu.be/4OIPCbYBoX4
Ultra-thin (2.4 in) behind seats and more tight spaces
9x slower temperature rise enhances safety & reduces thermal runaway
Versatile mounting with vibration-resistant bracket kits
10A reliable charging in freezing conditions down to 14°F/-10°C
Powering a 2000W inverter with a single battery at 200A high output
5% Discount code: DAVE5

Click here to purchase from Renogyopen_in_new

Renogy 12.8V 104Ah Super Slim Solid State Lithium Iron Phosphate Battery

This is a semi-solid state battery. I don't know of any consumer grade full solid state batteries. The reduced electrolyte brings some impressive characteristics, watch my testing video here: https://youtu.be/4OIPCbYBoX4
Ultra-thin (2.4 in) behind seats and more tight spaces
9x slower temperature rise enhances safety & reduces thermal runaway
Versatile mounting with vibration-resistant bracket kits
10A reliable charging in freezing conditions down to 14°F/-10°C
Powering a 2000W inverter with a single battery at 200A high output

Click here to purchase on Amazonopen_in_new

Get an additional site wide discount at LiTime with code: Dave8

LiTime (used to be AmpereTime)

Good value for money. I've tested their 12V 100Ah batteries with great results. Site Wide Discount CODE: Dave8

LiTime direct site and use coupon code.open_in_new

You can also purchase LiTime/AmpereTime batteries from Amazon

Ampere Time 12V 100Ah LiFePO4 Battery

Great Value 12V 100Ah LiFePO4 Battery

Purchase on Amazon.open_in_new

Ampere Time 12V 200Ah Plus Lithium LiFePO4

Great Value 12V 200Ah LiFePO4 Battery

Purchase on Amazon.open_in_new

EG4-WP Waterproof Lithium Battery | 12V 100AH | Bluetooth

EG4 always has great value for the money.
Use the link below and the discount code "EVERYDAYGET50" for a $50 DISCOUNT on any purchase of $500 or more! (Code is valid for a limited time)

Purchase from Signature Solar. open_in_new

Epoch 12V 120Ah – Group 27 – Cranking & Deep Cycle Lithium Battery (Dual Purpose)

The Epoch 12V 120Ah Cranking and Deep cycle battery is the perfect solution for boats and RVs. It is compatible with all outboard motors and has 150A max discharge. It has a built-in smart BMS, allowing for easier protection of the battery and a longer life span.

Purchase from Current Connected.open_in_new