The new design specifically for the 18650 battery protection board, 3.7V single or combination of lithium battery with line protection board
Combination of batteries: parallel combination of batteries, the same voltage, the current sum; series combination of batteries, the current unchanged, the voltage added.
Single protection board size: 28mm * 3mm;
With nickel bar Size: 90mm * 3mm;
Main functions: Overcharge protection, over-discharge protection, short circuit protection, over-current protection
1, built-in high-precision voltage detection circuit;
2, overcharge protection, over-discharge protection, over-current, short circuit protection;
3, through the MOS tube can control the battery charge and discharge;
4, wide operating temperature range of -40 ° C to +55 ° C;
5, low current consumption;
Detailed components: 2 MOS \ DW01 + \ Seiko 8205A
DW01 + 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.
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