Adjustable LiPo Charger(PRT-14380) question

Components & Accessories Power
1

Hello.

I am considering purchasing the Adjustable LiPo Charger(PRT-14380) and had a question I hoped a user might answer.

If I were to turn “ON” two of the selector switches, would the charge rate be additive?

For instance, if I were to turn 500mA switch ON and the 400mA switch ON would I get 900mA ?

Thanks.

Gary

2

A glance at the schematic shows that turning on two switches results in the parallel combination of the two current selection resistors. You can calculate the resulting charge rate from the equivalent resistance and the formula in the on line user guide.

According to the chip datasheet, 500 mA is the maximum allowed.

3

Thank you.

4

I read that charging a cell phone to 100% regularly was not good for the battery health. Instead, I wanted something which could limit charging rate of my Android phone so that when i plug it in before bed at night and wake up in the AM, it is not fully charged, maybe only to 80% or so. I thought this PRT-14380 might work once I experimented and found the “right” charging rate. I made my own female JST to Micro USB male connector and have tried with this device but I cannot get the cell phone to show it is even charging.

Is this a feasible idea, and why will (will this not) work?

Thanks