I built a pack last fall with one of these side-by-side 2s2p holders...
1* Battery Holder/Case for Li-ion 18650 17670 battery+ 2S2P w/PCM output:6-8.4V | eBay
...but they don't fit the otherwise nicely compact and space saving magicshine battery bags. Does any holder maker offer a 2s2p w/PCM module in the compact square shape ?
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