Sunpal 12.8V 50Ah Rechargeable Lead-Acid Replacement Lithium Battery

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Electrical
Nominal Voltage/V		12.8
Nominal Capacity/Ah		50
Rated Energy/Wh		640
BMS Function		Overcharge, overdischarge, overcurrent and temperature protection
Charge Cut-off Voltage/V		14.4
Discharge Cut-off Voltage/V		10.8
Standard Charge Current/A		10
Max. Continuous Charge Current/A		20
Max. Continuous Discharge Current/A		20
Maximum Discharge Current/A@10S		50
Mechanical
Dimensions/mm		L223W150H178
Weight/kg		5.6
Terminal		M6
Casing material		ABS
Environment
Working Temperature Range/℃		Charge : 0~55 Discharge: -20~60
Humidity Range/RH		＜95%
Storage temperature/℃		15~35
IP protection level		IP65

Q : 1. Can this battery replace a 12V 50Ah lead-acid unit directly? A : Yes, it's fully compatible and offers longer life, lighter weight, and faster charging with no maintenance.
Q : 2. How long will it run my devices when off-grid? A : With 640Wh capacity, it can power a 60W appliance for over 10 hours—great for camping or emergency use.
Q : 3. Is this battery safe to use in enclosed or mobile setups? A : Absolutely. The built-in BMS and IP65 case protect against overcharge, short circuits, and moisture exposure.
Q : 4. What charger should I use for this battery? A : Use a 14.6V LiFePO₄-compatible charger with up to 10A current for optimal performance and safety.
Q : 5. Can I connect multiple units for more capacity? A : Yes, up to 4 in series or parallel, depending on your voltage and energy needs—ideal for larger solar setups.
Q : 6. What kind of devices can it reliably power? A : It supports lights, pumps, small inverters, portable tools, and backup power systems up to 640Wh output.