Hello everyone,
I Have this power bank Remax, Model: RP-V20 | Capacity : 20 Ah | Input : DC 5V / 2A | Output : DC 5V / 2.1 A
It had an accident someone dropped it in a water fountain, anyway I managed to pick it up and found out that the charging circuit is damaged in one component or many,
I extracted the li-ion batteries and charged them separately and they work so fine, The Output of the Batteries is 3.93 Volts
And when i connect them back to the charging circuit they give a reading in the USB output 3.66 Volts
And when I plug a a 5 Volts charger in any in any IN inputs it gives me a reading of 0.4 Volts which means its charging the batteries with this value
Assuming that the charging circuit is unfix-able,
Now the problems is two parts,
Firstly and most important the output way : I need to increase this voltage output from 3.9V to 5V to be able to charge my phone.
Secondly : I need to charge the batteries, so will it be a problem to directly connect them with the IN slot so that they be charged with a 5V, will that affect the battery life on the long term or should i charge them with exactly 3.8 V as written on the battery case ?
I thought about making a Joule Thief Circuit but I don't know how to calculate everything to make the output exactly 5 volts !
I'm counting on you to make this work please tell me every possible solution,
Thanks.
I Have this power bank Remax, Model: RP-V20 | Capacity : 20 Ah | Input : DC 5V / 2A | Output : DC 5V / 2.1 A
It had an accident someone dropped it in a water fountain, anyway I managed to pick it up and found out that the charging circuit is damaged in one component or many,
I extracted the li-ion batteries and charged them separately and they work so fine, The Output of the Batteries is 3.93 Volts
And when i connect them back to the charging circuit they give a reading in the USB output 3.66 Volts
And when I plug a a 5 Volts charger in any in any IN inputs it gives me a reading of 0.4 Volts which means its charging the batteries with this value
Assuming that the charging circuit is unfix-able,
Now the problems is two parts,
Firstly and most important the output way : I need to increase this voltage output from 3.9V to 5V to be able to charge my phone.
Secondly : I need to charge the batteries, so will it be a problem to directly connect them with the IN slot so that they be charged with a 5V, will that affect the battery life on the long term or should i charge them with exactly 3.8 V as written on the battery case ?
I thought about making a Joule Thief Circuit but I don't know how to calculate everything to make the output exactly 5 volts !
I'm counting on you to make this work please tell me every possible solution,
Thanks.