MKRZero not responding to LiPo battery via port

Hardware MKR Family MKRZero
1

I connect a LiPo battery to the MRkZero via the battery port and no light...nothing.
i directly connect the battery to VIN/GRD pins and works perfectly.

I saw one old post where someone said the solution was 'swaping' the polarity of the LiPo battery?
I'm unsure how to do this?

Thanks

2

Actually, when I connect the Adafruit 1200mAh battery to
-Battery port nothing happens

  • VIN & GRD some lights come on; the charge light glows dimly; MKRZero does not run
    this is the case with 2 MKRZeros that I've purchased?
    I'm definitely doing something wrong
    Can anyone help?
    Thanks
3

Some connectors on the Li-ion batteries are swapped. See the red and black wire? Cut it in the middle and swapped the connection.

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4

Yes I bought one battery and the connectors were switched
Fortunately I have a bag of connectors and rewired blk to red and red to blk
but still no response from either of my MKRZeros
Thank you

5

Also batteries test 4.18V for the 1200 mAh and 3.76 v for the 3700 mAh
So batteries are good

6

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