Protection Circuit Module (PCB) for 7.4V Li-PO & Li-ion 18650 / 18500 Battery Packs (11A Limit) with NTC

Features and Benefits
Protection Circuit Board for 2S Li-ion and Li-polymer battery pack
Designed for 2S Li-ion or Li-Polymer battery
Prevents 2S Li-ion or Li-polymer battery from over-charging, over-discharging and from discharging current more than 8A (11A cut-off).
Fully Compatible with both Li-ion and Li-Polymer cells

Specifications
Normal Temperature: 25℃
Over charge detection voltage: 4.25±0.025V
Over charge detection delay time: 1.0±0.3s
Over charge release voltage: 4.05±0.05V
Over discharge protection voltage: 2.4±0.06V
Over discharge detection delay time: 128±39ms
Over discharge release voltage: 3.0±0.075V
Rated operational current: ≤5A
Over current detection current: 11±3A
Release condition: Cut load 
Detection delay time: 8-16ms
Detection condition: Exterior short circuit
Protection: Have
Release condition: Cut short circuit
Main loop electrify resistance: Rss≤50mΩ
Current consume in normal operation: 8μA Max
38 x 8 x 3.5 mm
NTC: 10kOhm 3380 1% NTC, Built-in

Because of the very high energy density, Li-Ion Battery pack must be connected to a protection circuit module to prevent accidental battery explosion caused by over-charging or over-discharging.