3.7V 500mA Solar LiPo Battery Charger

Lynxmotion Electronics & Software
1

What is the maximum amps input for the 3.7V 500mA Solar LiPo Battery Charger???

2

Hello @Leyland and welcome to the forum!

You can find all the Electrical Characteristics of the 3.7V 500mA Solar LiPo Battery Charger in the datasheet. If you check page 5 you’ll see that the operating current is Min: 400 uA, Typ: 650 uA, Max: 950 uA.

3

Sorry do 1000 Ua go in 1 amp

4
  • typ = typical
  • uA = microampere

:grin:

5

SOS I know just looked it up do 1000 Ua go in 1 amp? Sorry

6

Should having 1 amp going in be okay?

7

And I have read the data sheet

8

micro means 10^-6

For example: 1000 uA = 1000/1000000 A = 0.001 A

You can also use this calculator if you find yourself struggling with the conversion

http://www.unit-conversion.info/metric.html

9

But that not many amps how do I find a solar panel outputting so little are you sure the battery will charge?

10

I think I misunderstood your question, if you are asking for the charging current then that is the “BAT pin Current” on the datasheet, so Min: 400, Typ: 500, Max: 600 mA (milliamperes) @VBAT3.6V and Min: 25, Typ: 50, Max: 75 mA @VBAT2.4V

1 Like
11

Got confused between watts and amps

12

I worked it out I will have two 3v solar panels both will output 400 milliamperes thanks for your help will this work?

13

Then it would be 6v and 800 milliamperes going in the board

14

You won’t be able to get 800mA because the maximum charging current is 500 mA or

600mA with an external resistor

according to the datasheet

15

You can find all the Electrical Characteristics of the 3.7V 500mA Solar LiPo Battery Charger in the datasheet . If you check page 5 you’ll see that the operating current is Min: 400 uA, Typ: 650 uA, Max: 950 uA.

You say here that the max Ua is 950 so 800 is okay?

16

That is the input current, not the charging current, and also that is in uA not mA.

17

What their difference between Ua and ma and the input will be steeped down to the charging current because that’s the whole point of the circuit😁

18

uA is micro Ampere, mA is milli-Ampere.

19

So what voltage and amp(milliamperes/microamps) and Watts does my solar panel need I am so confused :woman_shrugging:

20

So if input is 6v 0.0008 amps then watts are 0.0048 is this correct because I can’t find any solar panel like this :frowning: