Thanks for the diode information.The four-cell pack was not fully charged so potentially could be 0.4V higher.Even though the designers will assume the maximum voltage is the maximum voltage of the 3.7V LiIon battery, you would think there is built-in over-voltage protection with whatever IC they use.
You could of course have used something smalled than the XT60 plug. That one is unnessecarily big. But I suppose it will do if you are having a "scramble parts together" project
Anyway, thanks for the battery advice earlier. I have a lot of left over LiPo's that I don't use anymore. They are in pretty OK shape and I'm thinking of using them in parallel. They are 3S though, so I need to use one of my voltage regulators.
Another plan is to buy some beefy 1S (3.7V) LiPo's. Something like this Zippy 6200mAh. Or maybe go even more DIY (and cheaper) with this naked 5800mAh cell. If I would take 3 in parallel, I would get like a solid 18Ah and that should have my 240HS running for some days.
You were talking about the Schottky's, so I ordered 50x 1N5822's on eBay. But do I just put on each plus (+) wire of each battery and then put all batteries together?
By the way, have you seen this Solar charger circuit from Adalight? Of course it is more expensive but also better quality than the chinese versions on eBay, but is it the same functionality?
I liked your referral to the magic smoke
3S gives approx 12.5V which will give you better efficiency from the regulator, than trying to drive it from 3.7V
That would certainly do the trick for reasonably long shoots. Running them in series with the regulator on the output is another option.
As previously stated, this is a good arrangement if you want to hot swap the batteries and/or other power sources without powering off.
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