Discharging a Li Ion battery to storage voltage

[Deanwvu]

Hello all,

I remember reading before that using the "discharge" feature of my Hyperion charger is not recommended, at least at a rate higher than an amp or so...

What is the best accurate method for discharging a 14s Li Ion battery pack to a certain voltage?


Thanks

 

[bowlofsalad]

Hello all,

I remember reading before that using the "discharge" feature of my Hyperion charger is not recommended, at least at a rate higher than an amp or so...

What is the best accurate method for discharging a 14s Li Ion battery pack to a certain voltage?


Thanks

It's said that voltage isn't a perfect or ideal way to determine the state of charge of a cell. I've read that storing a pack at around 50% of it's capacity isn't a bad thing to do, I've also read cycling the pack once a month or so is good as well, I don't really know myself. However, if you know the pack capacity, you can simply charge to 100% and then, using a watt meter, discharge the pack so that you've consumed around 50% of the packs total watt hours. Should be pretty easy and accurate assuming you know the packs total capacity.

 

[Deanwvu]

Yes, but what do I use to discharge the battery, if I do not have a bike available? (or other EV vehicle)


If there is a long cold this winter, for example, and I would like to cycle my batteries, how do I discharge them?

 

[bowlofsalad]

Yes, but what do I use to discharge the battery, if I do not have a bike available? (or other EV vehicle)


If there is a long cold this winter, for example, and I would like to cycle my batteries, how do I discharge them?

Excellent question, thanks for asking it.

[youtube]usRE3gLFnOc[/youtube]

 

[wesnewell]

I've had no trouble using the discharge function of my 1420i at up to 10A. There's also a cycle function.

 

[dogman dan]

So set it to discharge at 1 amp if you want to.

Any simple heating element can become a discharger, used along with a watt meter. Space heater, halogen light, etc.

 

[Deanwvu]

Yes, but what do I use to discharge the battery, if I do not have a bike available? (or other EV vehicle)


If there is a long cold this winter, for example, and I would like to cycle my batteries, how do I discharge them?

Excellent question, thanks for asking it.

[youtube]usRE3gLFnOc[/youtube]

THANKS!