Hi all, in my board I have 2 AA batterys that I want to use rechargeable battery in= stead and connect to 5 volt power coming from outside make it slow charge. the schematic is simp= le "slow charge" -+5------A--diode-K---resistor---------Bat+ 5v =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 = =A0 =A0 =A0 =A0 =A0 =A02.4v=A0rechargeable=A0=A0 --------GND----------------------------Bat-=A0 A=3D anode K =3D cathode=A0 since there is no auto shut down etc I want to use it as continuously slow = charge but not going to=A0 over charge the battery. my board run time takes 5 ma and when wireless is = on it takes 100ma 2.4v power is connected to boost circuit and output is 3.3v to pic. my question is what resistor value should I use that slow charging is going= to happen and no thing will blow or burn?=A0 any idea? thanks Andre=A0 --=20 http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .