ccihon
100 W
I have been riding my trike more lately, so also charging more often. I have a big Li-Ion 52v 22ah battery, and a 3A charger, marked "58.8v" which seems correct. I am monitoring the output voltage with an accurate meter, but the numbers there match my voltmeter as well as the KT LCD voltage display. All works well - but my question is whether it makes sense or is beneficial to "balance" the battery from time to time, or how to know if it is "out of balance". The battery has a BMS, but I'm not sure what it is capable of.
Generally, I charge it up after it reaches a low of around 25% on the meter, which equates to around 46V. I generally manually stop charging after a number of hours, and am happy if the battery nets out above 80% - maybe 56v.
My real question comes after observing the behavior of the charger. It seldom if ever shows a "green" led and a fully charged state until I disconnect the battery for measurement and re-connect. It seems that if the battery is at above 90% of the total spec voltage of 58.8, returning it to the charger will yield a green led and the charger is idle (has internal fan that is off). Is "out of balance" indicated by a condition when the full charge is less than the spec pack full charge voltage of 58.8?
I know it may be a bad practice to leave it charge to 100% - I'm just wondering if it will ever get there, or in fact the charger will continue to deliver a charge and possibly the BMS will begin balancing? Next charge I plan to leave it on well past when I think it will yield a "full" charge indicator on the charger. Does the charger enter a green "charged" state only after the BMS stops "asking" for charge voltage? Thanks
Generally, I charge it up after it reaches a low of around 25% on the meter, which equates to around 46V. I generally manually stop charging after a number of hours, and am happy if the battery nets out above 80% - maybe 56v.
My real question comes after observing the behavior of the charger. It seldom if ever shows a "green" led and a fully charged state until I disconnect the battery for measurement and re-connect. It seems that if the battery is at above 90% of the total spec voltage of 58.8, returning it to the charger will yield a green led and the charger is idle (has internal fan that is off). Is "out of balance" indicated by a condition when the full charge is less than the spec pack full charge voltage of 58.8?
I know it may be a bad practice to leave it charge to 100% - I'm just wondering if it will ever get there, or in fact the charger will continue to deliver a charge and possibly the BMS will begin balancing? Next charge I plan to leave it on well past when I think it will yield a "full" charge indicator on the charger. Does the charger enter a green "charged" state only after the BMS stops "asking" for charge voltage? Thanks