Hi all,
I have a question about Li-ion rechargable batteries. I have almost no experience with it. Documentation to battery is very poor, but there is an info about charging profile: Stage 1: Constant Current 0.82 Ampere (0.2C) until Voltage reach 4.2V Stage 2: Constant Voltage (4.2V) with decreasing current 0.82A -> 0.12A
I want to design charger for that battery. I have found several charging ICs (for instance LT3650) that fit my design pretty well, but this IC terminate charging process at 1/10 of programmed charge current. In my case: 0.82A/10 = 0.082A what is about 1.5 times lower than 0.120A in battery specification.
I confused a little with min charge current in spec, I supposed the lower current you can provide the more "fully" you charge battery.
The question is: Is it safe to continue charge Li-ion after 0.12A threshold till 0.082A (and how it could affect battery) or is it better to use IC's with user programmed termination current (like LTC4068-4.2) to stop charging process exactly at 0.12A.
Thanks.
I have a question about Li-ion rechargable batteries. I have almost no experience with it. Documentation to battery is very poor, but there is an info about charging profile: Stage 1: Constant Current 0.82 Ampere (0.2C) until Voltage reach 4.2V Stage 2: Constant Voltage (4.2V) with decreasing current 0.82A -> 0.12A
I want to design charger for that battery. I have found several charging ICs (for instance LT3650) that fit my design pretty well, but this IC terminate charging process at 1/10 of programmed charge current. In my case: 0.82A/10 = 0.082A what is about 1.5 times lower than 0.120A in battery specification.
I confused a little with min charge current in spec, I supposed the lower current you can provide the more "fully" you charge battery.
The question is: Is it safe to continue charge Li-ion after 0.12A threshold till 0.082A (and how it could affect battery) or is it better to use IC's with user programmed termination current (like LTC4068-4.2) to stop charging process exactly at 0.12A.
Thanks.