Solar LiPoly Charger v2.0 Battery not charging

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OhioJoe
 
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Solar LiPoly Charger v2.0 Battery not charging

Post by OhioJoe »

2014-11-18 21.50.45.jpg
2014-11-18 21.50.45.jpg (519.23 KiB) Viewed 236 times
I have product #390. Soldered the 2-pin JST cable to the battery (6600 mAh/3.7V) and shrink wrapped the wires. I plugged in a mini usb cable to the board from my MacMini usb3 port. The charge light comes on, and after 4 hours of charging the battery only shows .5 on the volt meter. If I place the volt meter leads on the Batt+ and Ground (to the left side of the JST port with the battery connected. The Charge LED briefly lights and goes out then the DONE LED lights. But only if I hold the volt meter probes to the board.

Any way to check the battery or continuity of the cable from the battery to the board?

Thanks

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adafruit_support_bill
 
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Re: Solar LiPoly Charger v2.0 Battery not charging

Post by adafruit_support_bill »

the battery only shows .5 on the volt meter
What voltage do you measure on the battery connector when the battery is disconnected from the charger?

The low-voltage cutoff circuit in the battery should prevent it from going below about 3v. If you are seeing less than that, it is ether a bad solder connection somewhere or a dead battery.

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OhioJoe
 
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Re: Solar LiPoly Charger v2.0 Battery not charging

Post by OhioJoe »

Connection on Front side of board, only the power LED lights.
Connection on Front side of board, only the power LED lights.
2014-11-19 11.20.16.jpg (341.24 KiB) Viewed 214 times
Connection on back of board
Connection on back of board
2014-11-19 11.19.44.jpg (208.12 KiB) Viewed 214 times
Voltage was 0.5 from the battery unplugged. Soldering was bad on + line. New photos, soldered the +/- wires from the battery directly to Batt+ and Ground on the board. The charge LED does not light. DONE LED does not light. Both light briefly when I unplug the Mini USB cable. The Load and Capacitor outputs are ~ 4.97 when Mini USB is plugged in.
Connection on Front side of board, only the power LED lights.
Connection on Front side of board, only the power LED lights.
2014-11-19 11.20.16.jpg (341.24 KiB) Viewed 214 times
Connection on back of board
Connection on back of board
2014-11-19 11.19.44.jpg (208.12 KiB) Viewed 214 times
What else to check?

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adafruit_support_bill
 
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Re: Solar LiPoly Charger v2.0 Battery not charging

Post by adafruit_support_bill »

If the battery still measures <3v after removing your soldered leads, then the cell is dead. Please contact [email protected] with a link to this thread.

Also note that your Batt & GND solder joints in the photo have not flowed onto the solder pad. For tips on fixing solder problems such as this, please see this guide:
http://learn.adafruit.com/adafruit-guid ... n-problems

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OhioJoe
 
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Re: Solar LiPoly Charger v2.0 Battery not charging

Post by OhioJoe »

Yes <3 volts in the battery.
Thanks.

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