stacking batts
- Thread starter clamman
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if the mod has protection built into, most people will say its safe. I'm not a fan of it myself, ive seen to many warnings against it.
If you do give it a go, make sure you mark the batteries and make sure you rotate their position in the mod with every charging. The last battery in the chain gets worked harder as its providing its own power as well as channeling the power from the other battery.
If you do give it a go, make sure you mark the batteries and make sure you rotate their position in the mod with every charging. The last battery in the chain gets worked harder as its providing its own power as well as channeling the power from the other battery.
so long as you're smart with them, use quality batteries and chargers in a well protected mod things should go well. Many electronic devices use 7.4v batteries safely, tablet and laptop computers specifically. Don't worry too much about the fear mongering, a little common sense goes a long way
The most common cause of failure, is dead shorting/arcing between the cell gap and the mod tube/case. Especially if the batteries are loose in the case (undersized). I always recommend that someone use a PVC or cardboard sleeve to keep the cells aligned. The simple solution it to just wrap the "stack" in tape. It's not pretty and takes a few seconds extra to do (during a battery swap), but does provide SOME added protection.
Also check your cells with a voltmeter when they come out of the tube (for recharging). If you see a cell gap (difference in voltage between the 2 cells) of more than 1/2 volt or so...then something is wrong. You could try fully charging the cells, one at a time, on individual charging legs (multi cell charger). If the cell gap is still there, then the problem could be the charger. If the gap is under 0.2 volts when the cells are peaked (fully charged), but they come out of the mod with a much larger gap than that....chances are you have a damaged/tired/worn cell.
The suggestion of rotating cells (in multicell configurations) is a good one. It is also helpful to give the cells a chance to "settle" once you take them off the charger. They will last much longer.
Also check your cells with a voltmeter when they come out of the tube (for recharging). If you see a cell gap (difference in voltage between the 2 cells) of more than 1/2 volt or so...then something is wrong. You could try fully charging the cells, one at a time, on individual charging legs (multi cell charger). If the cell gap is still there, then the problem could be the charger. If the gap is under 0.2 volts when the cells are peaked (fully charged), but they come out of the mod with a much larger gap than that....chances are you have a damaged/tired/worn cell.
The suggestion of rotating cells (in multicell configurations) is a good one. It is also helpful to give the cells a chance to "settle" once you take them off the charger. They will last much longer.
A single battery in vv mod running at max voltage is just that running at maxx all the time.
A stacked battery running at maxx setting is not running the batteries at maxx as the voltage is regulated down
A stacked battery running at maxx setting is not running the batteries at maxx as the voltage is regulated down
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