3 ms·Not for supercaps, most have a breakdown voltage below 5 V.by achr2 10y agoNot for supercaps, most have a breakdown voltage below 5 V.Cerium 10y agoThat's not important, the batteries also explode if you take them over about 4.2v, you can stack them up to get the desired system voltage.fzzzy 10y agoYou can just stack supercaps in series to increase the voltage.