Direct charge battery: You need special stuff.

Before you connect, make sure you know which pin is +, gnd on power supply and battery.

Use a home made or DIY connector to connect your power supply and battery, in between a current limit resistor is required.

For a 12.6V(3*4.2) battery, I use a transformer AC/DC 12V adaptor <2A directly connect the + to battery charge +, - to ground. That adapter open voltage is 12*1.414V loaded voltage is 12V so that no resistor in middle is safe and higher than 12.6 V can charge. But not leave the connection too long time, for test pupose 1 hour (1~2AH) charge should be good enough.

For a 16.8V(4*4.2) battery, a similar 16V adapter could be used.

If you use 19V adapter, series a risistor 5~10ohm 10W in the charge wire.

所有跟帖： 

• 那用这么复杂？串联几个大灯泡就行了 -itallture- ♀ (0 bytes) () 12/05/2012 postreply 15:48:05

• 回复：大侠们,昨晚忙着测电压, 没看你们的贴, 报歉, -weiyi- ♂ (15391 bytes) () 12/06/2012 postreply 07:31:10

• Different from desktop, NB use dual power supplies. -psp0605- ♂ (928 bytes) () 12/06/2012 postreply 11:06:03

• 没办法，LZ没有这个逻辑：好电池能区分出MB或AC的好坏 -itallture- ♀ (0 bytes) () 12/06/2012 postreply 12:22:19

• 回复：Different from desktop, NB use dual power supplies. -weiyi- ♂ (12334 bytes) () 12/06/2012 postreply 12:37:42

• Please read a little more about the PTC -psp0605- ♂ (68 bytes) () 12/06/2012 postreply 12:59:47

• 回复：P 兄, 我想到了, 所以我去订了一根Cable 来试. 不过我还不知道PTC. -weiyi- ♂ (6877 bytes) () 12/06/2012 postreply 18:47:40

• 看来你不是动手的料。剪块罐头皮1折2，正好。 -itallture- ♀ (0 bytes) () 12/06/2012 postreply 19:25:59

• For DIY charging, I think you need -psp0605- ♂ (297 bytes) () 12/06/2012 postreply 22:40:47

• I do have solding iron, copper wires , but -weiyi- ♂ (121 bytes) () 12/07/2012 postreply 06:35:53

• I post a PTC link in my eariler reply, It is a Resistors, Non-li -psp0605- ♂ (385 bytes) () 12/07/2012 postreply 08:33:33