10db Kiváló minőségű 3,7V 3A Li-ion Li-ion Akkumulátor 18650 Töltő Túltöltés Védőtábla Forrasztószalaggal
10pcs High-quality 3.7V 3A Li-ion Lithium Battery 18650 Charger Over Charge Protection Board With Solder Belt
Specification: 
Single protection board size: 28mm * 3mm
With nickel bar Size: 90mm * 3mm
Linelength: 80mm
Overcharge detection voltage: 4.275±0.025V
Overcharge recovery voltage: 4.075±0.025V
Over-discharge detection voltage: 2.50±0.1V
Over-discharge recovery voltage: 2.90±0.1V
Overcurrent protection current: 2.5±0.3A
Normal discharge current: 2A
Short circuit protection time: ≤50us
Normal working consumption current: ≤6uA
Standby current consumption: ≤0.6uA
Working resistance: ≤50mΩ
Main functions: Overcharge protection, over-discharge protection, short circuit protection, over-current protection
Features:
100% Brand New and High Quality
built-in high-precision voltage detection circuit
overcharge protection, over-discharge protection, over-current, short circuit protection
through the MOS tube can control the battery charge and discharge
wide operating temperature range of -40 ° C to 55 ° C
low current consumption 
Detailed components: 2 MOS \DW01A \Seiko 8205A 
DW01A  is a lithium battery protection circuit, in order to avoid lithium batteries due to overcharge, over discharge, current is too large lead to shorten the battery life or battery damage is designed. It has a high accuracy of voltage detection and time delay circuit.
8205A  has the advantage of internal integration of two identical nmos tube for lithium battery protection circuit is very convenient.
Connection description:
B connect to battery
B- connect to battery-
V for battery output input
V- for battery output input-
Package Included:
1 x 3.7V 1S Battery protection board
1005001572563231 - secondday