Do Batteries Weigh More When Charged. Its a common misconception that a battery contains a reservoir of electrons like a bucket full of water. Yes but the difference is negligable.
Just like a HDD weighs a bit more when its full. Note that an electron weighs a very tiny amount of 9 10-28 gram. In this video the difference measured was negligible.
Do batteries weigh more charged.
By charging it you just moved some electrons or ions from one side of the battery to the other. The 20 amp-hour compact battery has 33 more capacity than the 15 amp-hour battery thanks to a cell upgrade that didnt come at the cost of more weight or size. You can seal this battery in a case or strap it down and forget it. Does a fully charged battery weigh more than an uncharged battery.
