Specification:

100% brand new and high quality Charge module- Linear charging. Current- 1A adjustable. (change r3) Charge precision- 1.5%. Input voltage- 4.5V-5.5V. Full charge voltage- 4.2V. Led indicator- red is charging Blue is full charged. Input interface- micro USB. Work temperature- -10? to +85?. Inversed polarity- NO. Size- small to 25X19X10mm.

NOTE:

1. Ampere meter can only be connected to 5v input end of the module.
2. It is better that the charging current is 37% of the battery capacity. If you charge to the battery of 1000mAH, current of 400 is enough.
3. The connection wire should not be too thick.
4. Make sure the connect point is good.
5. If the input voltage is too high, like 5.2v, the current will be less than 1000mA, it is normal. It is protection function, auto-subtract the charging current to avoid burn damage to chip.
6. NO Reversed polarity.

Package Included:

1 x 5V Micro USB 1A 18650 Lithium Battery Charging Board Charger Module+Protection

change r3 with these values to change the charging current

10k 130ma 5k 250ma 4k 300ma 3k 400ma 2k 580ma 1.66k 690ma 1.5k 780ma 1.33k 900ma 1.2k 1000ma

i have these value resistors if you want 1 to change the charging current 2k 3k 10k

i also sell 2s 7.4v chargers listed under rc chargers for 5.00

free shipping on orders over $75.00 (items must be in a cart-one transation) if you see a similar item cheaper let me know and i will see if i can beat it. i offer combined shipping for the items i sell.