Charles

This circuit is used for trickle charging of NICADS ONLY. It suffers from NOT being a true constant current, so it won't keep a ni-cad happy at higher charging rates.

You really should stop getting your information from circuit websites you know. and design things yourself. Analyse the stuff you post before linking it will stop you looking like an ass if those of us who know what we are doing see it and comment.

I repeat. This circuit is potentially DEADLY when used to charge a LI-ION battery. Do you see why ?

I am a consulting engineer, with 20 years plus experience in electronic and mechanical systems. You ?
Steve