Grade A 3.2V 40Ah LiFePO4 Prismatic Battery Cell for DIY Solar RV Off‑Grid Energy Storage

Basic Properties

Place of Origin: Shenzhen, China

Brand Name: MEISAEN

Certification: CE, RoHS, UN38.3, MSDS, IEC 62619

Trading Properties

Minimum Order Quantity: 5 Piece

Payment Terms: T/T

Supply Ability: 3000 Pieces per Month

Lithium Iron Phosphate Battery

Grade A LiFePO4 prismatic battery cell

40Ah solar energy storage battery

DIY RV off-grid battery cell

Product Description

Grade‑A 3.2V 40Ah prismatic LiFePO4 battery cell, 128Wh nominal energy. Designed for DIY builders, off‑grid solar storage, RV, marine, e‑vehicle and backup power projects. Support series‑parallel assembly to build 12V,24V,36V,48V battery packs. Excellent thermal stability, low self‑discharge and ultra‑long cycle performance.

Overview

Our 3.2V 40Ah Grade‑A prismatic LiFePO4 cell is a high‑performance lithium iron phosphate cell widely used for DIY battery pack builds, off‑grid solar energy storage, RV, marine boats, golf carts, electric tricycles, UPS backup power and renewable energy projects

Many hobbyists and system integrators select this 40Ah LFP cell to assemble 12V,24V or 48V storage banks for home solar systems. LiFePO4 features superior safety, thermal stability and longer service life compared with lead‑acid or other lithium chemistries, low monthly self‑discharge rate, suitable for long‑term standby scenarios

Key Features

✅ Grade‑A new prismatic LiFePO4 cell, consistent capacity & low internal resistance

✅ Nominal: 3.2V, 40Ah, 128Wh energy

✅ Long deep‑cycle lifespan: ≥4000 cycles @80% DOD

✅ Good high‑rate charge & discharge performance

✅ Wide operating temperature range, stable output for outdoor/off‑grid usage

✅ Safe LFP chemistry: no cobalt, high thermal stability, low fire risk

✅ Easy series‑parallel connection for custom 12V/24V/48V battery packs

✅ CE, RoHS compliant for global market

Typical Applications

‑ DIY LiFePO4 battery pack build

‑ Off‑grid solar energy storage, solar street light

‑ RV, camper, marine boat, yacht power supply

‑ Electric tricycle, e‑bike, golf cart, light EV

‑ UPS backup power, portable power station assembly

‑ Telecom base station, industrial energy storage

Technical Specifications

表格

Item	Parameter
Nominal Voltage	3.2V
Nominal Capacity	40Ah
Nominal Energy	128Wh
Charge Cut‑off Voltage	3.65V
Discharge Cut‑off Voltage	2.0V
Cycle Life	≥4000 cycles (80%DOD)
Max Continuous Discharge	6C
Internal Resistance	≤0.7mΩ
Weight	~1.06kg
Cell Type	Prismatic LiFePO4
Certification	CE, RoHS

Note: Busbars & nuts can be provided as optional accessories. Please add BMS when assembling into battery packs. Do not over‑charge or over‑discharge.

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