Li-Ion battery 12V 21Ah (3s7p)

The battery is designed for stable high-capacity output during repeated deep charge-discharge cycles in electrical systems with a constant voltage of 12V.

Specifications:

• Rated voltage: 11.1V;
• Rated capacity: 21Ah-23Ah;
• Case form factor: AGM 7-9Ah;
• Maximum charge voltage: 12.6V;
• Maximum charge current: 5A;
• Maximum discharge voltage: 8.25V;
• Maximum discharge current: 20A;
• Element Type: Li-Ion 18650;
• Circuit diagram: 3S7P;
• BMS type: 3S 40A passively balanced;
• Additional connector for connecting the charger: 5.5x2.1;
• Charge status indicator: yes;
• Additional outputs: no;
• Material: ABS plastic;
• Size: 150x65x94 mm.;
• Weight: 1045g.

Operating features:

• When charging the battery, connect the charger connector to the battery first and then to the AC outlet;
• After the battery is fully charged, turn off the AC power and then disconnect the battery.
• If you first disconnect the battery pack from the charger during charging, especially when the charging current is high (red light), the charger can be easily damaged.
• When the charger's LED indicator turns green, continue charging for 2-3 hours to balance the battery cells.
• Please use the charger and battery in a dry place, avoid overheating and hypothermia.
• Please try not to charge the battery immediately after the battery is depleted. Let it cool down.
• Please do not charge the battery while it is being discharged. Otherwise, you risk damaging the battery.
• Do not discharge the battery below the discharge voltage limit specified for the specific battery.
• If you need to store the battery for a long time, leave the battery 40-50% charged.
• Please do not use Li-Ion batteries in lead-acid UPS/Inverters without deep modification of the latter. Use a LiFePo4 battery and there will be little modification to the UPS/Inverters.