Description
Power is only as honest as the cell that stores it. The Deep Cell is a 3.2V 105Ah Grade-A LiFePO4 cell, the building block of solar storage, RV power, and off-grid systems that need to deliver for a decade, not a season. Lithium iron phosphate chemistry is the calm choice among batteries: it does not want to burn, it does not degrade on the shelf, and it counts its life in thousands of cycles.
This cell is specified for serious builds. It holds 90 to 105Ah of nominal capacity across a discharge window that runs from 3.65V down to 2.5V, and it accepts up to 1C charge current with a 3C discharge ceiling, which means a single cell can move serious current when your inverter asks for it. The internal impedance stays at or below 0.5 milliohm, keeping losses low under load. Grade-A selection matters here: matched cells assemble into balanced packs, and balanced packs are what make a 48V bank deliver its full rated energy year after year.
The cell measures 130.3 by 36.7 by 195.5 millimeters and weighs 1.98 kilograms, with M6 screw terminals that accept a clean busbar connection and an aluminum shell that sheds heat into the air. Its 6000-cycle design life, charging between 0 and 65 degrees Celsius and discharging from minus 35 to 65 degrees, makes it the workhorse for 12V, 24V, 48V, and even higher-voltage solar arrays, boats, golf carts, forklifts, RVs, and EVs. It is a component for people who build their own power, and it rewards careful assembly with a very long life.
This is not a battery. It is a decade of quiet, dependable current.
Key Features
- ✦ Grade-A LiFePO4 chemistry with 6000-cycle design life
- ✦ 90 to 105Ah nominal capacity at 3.2V
- ✦ 1C max charge, 3C max discharge for serious current delivery
- ✦ Internal impedance at or below 0.5 milliohm
- ✦ M6 screw terminals for clean busbar connections
- ✦ Wide temperature range: charge 0-65C, discharge -35 to 65C
- ✦ Aluminum shell, CE certified, Grade-A factory matched
Technical Specifications
- Chemistry: LiFePO4 (lithium iron phosphate)
- Nominal Voltage: 3.2V
- Nominal Capacity: 90-105Ah
- Cycle Life: 6000 cycles
- Cut-off Charge Voltage: 3.65V
- Cut-off Discharge Voltage: 2.5V
- Max Charge Current: 1C (0.5C recommended)
- Max Discharge Current: 3C (0.5C recommended)
- Internal Impedance: Less than or equal to 0.5 milliohm
- Terminals: M6 screw
- Dimensions: 130.3 x 36.7 x 195.5 mm
- Weight: 1.98 kg +/- 0.05 kg
- Shell: Aluminum
- Applications: 12V-108V solar storage, RV, boat, golf cart, forklift, EV
Application Scenarios
The Deep Cell is the unit of choice for off-grid builders and mobile power users. Solar installers assemble 4S, 8S, or 16S packs for 12V, 24V, and 48V systems, pairing the cells with a BMS that matches the 1C charge and 3C discharge envelopes. RV owners replace heavy lead-acid banks with a lighter LiFePO4 pack that deep-cycles daily without sulfation. Boat and golf cart users gain the same weight and cycle advantages, and forklift or EV conversions lean on the 3C discharge headroom for peak loads. Every build should start with a BMS and matched cells; this is the matched cell.
Frequently Asked Questions
Q: How many cells do I need for a 12V or 48V battery?
A: A 12V LiFePO4 battery uses 4 cells in series, and a 48V system uses 16 cells. For 24V, use 8 cells. Always pair the pack with a compatible BMS.
Q: Do I need a BMS with this cell?
A: Yes. LiFePO4 cells must be protected by a battery management system that balances the pack and enforces the charge and discharge limits listed above. Do not operate a raw cell pack without one.
Q: Can I connect cells in parallel to increase capacity?
A: Yes, cells can be paralleled before series connection to raise total capacity. Use cells of the same batch and state of charge so the parallel strings share current evenly.
Q: What is the expected cycle life?
A: Grade-A LiFePO4 cells in this class are rated for about 6000 cycles at moderate depth of discharge, which for a daily-cycled home battery translates to well over a decade of service.
Q: What terminals does the cell use?
A: The cell uses M6 screw terminals, suitable for bolted busbar connections. Torque them to the manufacturer recommendation and use proper busbar material for the current level.
Q: Can these cells power a 48V solar system?
A: Yes, a 16S configuration delivers a nominal 51.2V, the standard LiFePO4 voltage for 48V solar inverters. Pair the pack with a 16S BMS rated for your charge and discharge currents.
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