Technical parameters:
Model: HX-2S-D20
Overcharge voltage range: 4.25V-4.35V ± 0.05V
Size: 46mm * 20mm * 3.6mm
Overdischarge voltage range: 2.5-3.0V ± 0.05V
Upper limit working current: 13A
Working temperature: - 40℃ -- +50℃
Upper instantaneous current: 20A
Storage conditions: - 40℃ -- +80℃
Quiescent current: less than 10μA
Effective life: more than 50000 hours
Internal resistance: less than 300m Ω
Short circuit protection: It can be protected and needs to be charged for recovery
Charging voltage: 8.4V-9V
Main functions: overcharge protection, over-discharge protection, short circuit protection, over-current protection
Charging voltage: 12.6V-13V
Discharge duration limit: 13A±1A
Discharge protection current limit: 20A±1A
Charge limit voltage: 8.4V
Charge duration limit: 10A±1A
Charge protection current limit: 15A±1A
(single section) overcharge voltage :4.28V ± 0.025V
(single section) overcharge release voltage :4.08V ± 0.05V
(single section) overdischarge voltage :2.9V ± 0.08V
(single section) discharge discharge discharge voltage :3V ± 0.1V

Wiring instructions:
B+: Battery V+ Positive
B-: Battery V- Negative
P+: Output / Charging V+
P-: Output / Charging V-
MB: The connection point between the batteries

Note:
Lithium battery protection plate cannot be used for lithium iron phosphate batteries, hernia lamps, electric hand drill battery packs, electric fish machine battery packs, electric bicycle battery packs, children's car batteries, motor or products with motor, 1W fish-eye LED lamps