High Energy Density: Compact design with 20Ah capacity for extended runtime.
Long Cycle Life: 500+ cycles at 80% depth of discharge (DoD) under standard conditions.
Robust Safety: Integrated BMS with multi-layer protection (overcharge, over-discharge, short circuit).
Wide Temperature Range: Reliable performance from -20°C to 60°C.
Eco-Friendly: Lead-free and recyclable materials.

Specifications

Parameter	Value	Unit	Comments
Model	OiD20Ah-25.2	-	7S6P Li-ion configuration with high-efficiency cells.
Nominal Voltage	25.2V	DC	7S series connection (3.6V/cell).
Rated Capacity	20Ah	@0.5C	Tested at 25±2℃, 50% SOC.
Max Continuous Discharge	10A	@CC	Operates within -20°C to 60°C.
Max Charge Current	5A (0°C–45°C)	@CC/CV	Charges to 29.4V (constant voltage phase).
Terminal Configuration	UL3239 12AWG (Red+/Black-)	Connector Type	High-current terminals with anti-corrosion coating.
Internal Resistance	≤150mΩ	@1kHz	Ensures minimal voltage drop during high-load operation.
Weight	~3.5kg		Lightweight design for portable applications.
Dimensions	220mm(L) × 150mm(W) × 80mm(H)		Optimized for space efficiency.

Cycle Life

Test Conditions	Cycle Count	Capacity Retention	Standard
25±2℃, 0.5C charge + 10A discharge	500 cycles	≥80% initial capacity	GB/T 31484-2015 (equivalent)

Typical Discharge Profile:

Operating Temperature Range

Certifications

Key Features

BMS Specifications

Function	Threshold	Delay Time	Action
Overcharge Protection	4.2V ±0.05V/cell	<500ms	Cut-off + auto-recovery after voltage drop.
Overdischarge Protection	2.7V ±0.1V/cell	<1s	Cut-off + auto-recovery after charging.
Overcurrent Protection	15A (charge) / 10A (discharge)	<200ms	Load disconnection.
Temperature Protection	Charge: 55℃ / Discharge: 65℃	-	Adjusts charge/discharge rate or cuts off.

Applications

Usage Warnings & Precautions

Storage Guidelines

Warranty & Disclaimer

Warranty: 24 months from shipment or 500 cycles (whichever occurs first).
Coverage: Defects in materials or workmanship.
Exclusions: Damage from misuse, unauthorized modifications, or extreme environments.

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