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Another Lipo charging board
Posted: Thu Aug 24, 2017 9:03 pm
by Kevin
Anyone have experience with this charging board? It's small and cheap. Quant 10 for $2.98
Has anyone tried it?
http://tinyurl.com/yccarfv4
Re: Another Lipo charging board
Posted: Thu Aug 24, 2017 10:21 pm
by Helder
That's what I use in my builds and I already mentioned this in another thread too.
Re: Another Lipo charging board
Posted: Fri Aug 25, 2017 2:08 am
by Lphillimore
As above. I used this recently but you'll need to replace the resistor (122k ohm on left).
Works perfectly, however.
Nice little green 'charge completed' light, too.
Re: Another Lipo charging board
Posted: Fri Aug 25, 2017 2:17 am
by moosepr
Just be careful, there is no discharge protection on this board. Most good quality batteries have that built into a little PCB on the top of the battery. There is a version of this board with protection
http://www.dx.com/p/tp4056-4-2w-1-2a-5v ... lue-397213
That being said, your screen and pi will stop working long before the battery will get dangerously flat, but you will be protected if the pi is left connected accidentally (switched on in a bag or something)
Re: Another Lipo charging board
Posted: Fri Aug 25, 2017 2:40 am
by Lphillimore
moosepr wrote: ↑Fri Aug 25, 2017 2:17 am
Just be careful, there is no discharge protection on this board. Most good quality batteries have that built into a little PCB on the top of the battery. There is a version of this board with protection
http://www.dx.com/p/tp4056-4-2w-1-2a-5v ... lue-397213
That being said, your screen and pi will stop working long before the battery will get dangerously flat, but you will be protected if the pi is left connected accidentally (switched on in a bag or something)
I actually went for the protection modules ones but good callout.
Still cheap as chips
Re: Another Lipo charging board
Posted: Fri Aug 25, 2017 8:59 am
by Helder
Lphillimore wrote: ↑Fri Aug 25, 2017 2:08 am
As above. I used this recently but you'll need to replace the resistor (122k ohm on left).
Works perfectly, however.
Nice little green 'charge completed' light, too.
Why would you need to change the resistor? That's the right value for 500mAh charge rate of the chip.
Re: Another Lipo charging board
Posted: Fri Aug 25, 2017 11:27 am
by Lphillimore
Helder wrote: ↑Fri Aug 25, 2017 8:59 am
Lphillimore wrote: ↑Fri Aug 25, 2017 2:08 am
As above. I used this recently but you'll need to replace the resistor (122k ohm on left).
Works perfectly, however.
Nice little green 'charge completed' light, too.
Why would you need to change the resistor? That's the right value for 500mAh charge rate of the chip.
As far as I was aware and also in line with what you posted below the charge amperage is too high for a 1200mah lipo, close to 1000mah. Replacing the resistor with a 2k one brings it closer to 500mah.
http://www.sudomod.com/forum/viewtopic.php?f=33&t=3190
Hey if I misunderstood my bad but I changed mine to a 2k resistor.
http://www.candlepowerforums.com/vb/sho ... controller
Re: Another Lipo charging board
Posted: Fri Aug 25, 2017 3:36 pm
by Helder
Lphillimore wrote: ↑Fri Aug 25, 2017 11:27 am
Helder wrote: ↑Fri Aug 25, 2017 8:59 am
Lphillimore wrote: ↑Fri Aug 25, 2017 2:08 am
As above. I used this recently but you'll need to replace the resistor (122k ohm on left).
Works perfectly, however.
Nice little green 'charge completed' light, too.
Why would you need to change the resistor? That's the right value for 500mAh charge rate of the chip.
As far as I was aware and also in line with what you posted below the charge amperage is too high for a 1200mah lipo, close to 1000mah. Replacing the resistor with a 2k one brings it closer to 500mah.
http://www.sudomod.com/forum/viewtopic.php?f=33&t=3190
Hey if I misunderstood my bad but I changed mine to a 2k resistor.
http://www.candlepowerforums.com/vb/sho ... controller
You're right I was thinking of a larger battery I'm testing in a build.
Re: Another Lipo charging board
Posted: Sat Aug 26, 2017 8:57 am
by Kevin
I see on the comments section of DX.com for the protected device someone said the charging current is more like 500ma. So you both could be right!
The max current listed in the specs might be a marketing, not engineering, measurement.
Re: Another Lipo charging board
Posted: Sat Aug 26, 2017 8:09 pm
by Helder
I can always test it when I get some time to be sure.