Home made car charger...

[icarusbop]

Hello:

I have built a home made car chager, it charges fine - unless the battery is less than 70 something% full - in which case it discharges instead.

The voltage and avilable current are fine (5v, 1.5A) the pins connected on the connector are also fine (3 connections to +v and 3 to GND -don't have the pin details to hand) but still the problem persists.

I suspect there may be something amiss with the charger cct itself - perhaps interferance on the power line (not a smooth 5V)

Has anybody sucessfully (ie it charges all the time!!) built a car charger themselves and if so any chance I could have the CCt diagram used??

Alternatively anyone have any ideas about the problem I have??

Thanks.

[smithy318i]

You already asked about this (3 months ago)
Is your memory bad?

http://forum.xda-developers.com/viewtopic.php?t=18368

[icarusbop]

Any new users who have recently joinded the group are unlikely to read every old message on the system. I was hoping a new user may be able to provide an answer.
Also - I am also asking here if anyone has a known working cct diagram I could use.