Thread: Lithium battery

Hi again Steve and you can simplify your charging requirements for any lithium battery by setting the charging device to the GEL setting.

This, on a solar setup will look after your lithium battery without needing any input from yourself.

Also NOTE, unlike lead acid batteries, where it is best to leave them in a fully charged state when they are not going to be used for some time, lithium batteries should not be left in a fully charged state if they are not going to be for any length of time.

While is varies from one brand to another, it is far better for a lithium battery to be stored in about a 70% charged state.

Originally Posted by drivesafe

While is varies from one brand to another, it is far better for a lithium battery to be stored in about a 70% charged state.

Id heard charge to 90% allowing storage to drop to 80% and that you float them up to 100% every 3-6 months depending on how you're cycling them. Discharge could go as low as 30% remaining based on total AH drawn so long as the output voltage remained above the critical minimal volts for the battery.

Based loosely on how the 36v liths are performing on my ryobi stuff it seems to be pretty close

one of the other reccomendations I've been given (and I have not verified the requirement but on face value it does seem resonable to me) is no hot bulk charging. If the batteru has been working hard either let it cool off before trying to feed higher currents into it or if its still in use put just enough current on to support the load untill the battery cools and then hit it.

Talking hot charging hitachi certainly recommends avoiding hot charging on their Li ion batts.

I pick the ute up tomorrow drive back north then priority one is dog box with slide out fridge

I'll let y'all know how it swings

S

And on a side note,our lithium ion Hitachi cordless drill/grinder batteries don't like charging if they are hot.

Our battery drills/grinders get hammered all day at times.

In high ambients,we have continual problems with them not charging,the chargers continually trip out,which is very frustrating.

Hi again folks, I should have been more specific in my last post.

My comments relate specifically to LiFePO4 batteries ( as is what the thread is about ), not just lithium batteries in general.

Lithium-ion batteries, as used in portable battery powered tools are lithium-ion and have problems and limitations not found in LiFePO4 type batteries

thats one thing I dont like about my ryobi OEM chargers, if they detect the battery is hot once the charger is turned on it wont auto start when it cools down I have to either make brake the battery connection or turn the charger off and on.