Model: 8.4v-4000

Battery Type: lithium-ion battery

quantity of Battery: 4pcs

Bms : 2s 20A Balance

Soldaring type: Spot Welding

Battery quality : Best

Internal resistance: ≤ 26mΩ

Maximum charge : 8.4v

Low voltage auto cut : 6v 

High cut/Low cut protection : Yes 100% accurate

Battery Capacity : 8.4volt 4000mAh

NB:For Make Custom Size Battery🔋Pack "Contact us any Time".