LIthium chargers do not 'float' the battery once fully charged.
But they also dont truly fully charge the cells, on purpose.
My Ridgid charger brings batteries to 20.5v.
Makita and Dewalt 20.6,
not sure about ryobi, yet.
21v would be a truly fully charged rested, open circuit voltage for 18v nominal systems, dewaLt ' 20v max ' included.
Keeping battery packs in the middle 20% to 80% range is best for cycle life.
Keeping baTteries cool helps greatly.
Every 10degrees C average temp increase, doubles the raTe of self degradation/capacity loss with lead acid, and lithium 'might' not be as extreme in this regard, or it might.
Self discharge also increases at higher temperatures.
Ill be busting out Makita mower in a few hours, its 4 baTteries are in an air conditioned space, around 80% charged. That garage is still 88f, and rising.
I'll plug in the charger and top them off first. Ill usually take a break, put mower in shade, take hot batteries with me into aircon'd space, take the other 2 once ive cooled off.
IVe not yet drained makita Batteries in mower till the LVD shut power down. I was expecting it as LED 1 bar had been hding for longer than expected, but i finished before.
Ridgid BMS seemed say below 16v was the threshold.
I try and avoid that level of discharge.
I have 4 makita and 4 ridgid batteries, one dewalt, one Ryobi.
I have made in USA 3d printed adapters to run ridgid baTteries in Makita tools and maKita batts in ridgid tools, and Ridgid batts in the now never used ryobi blower.
Ive a MaKita blower, whacker ,and hedge trimmer too, and often run the ridgid batteries in these and keep the Makita batteries in pairs on ' landscape day'.
I never place hot/warm batteries in charger, and try to stop charging, with the ridgid baTteries, when amps have tapered below 0.5. Ridgid's external wall wart power supply allow his luxury.
2 RIdgid 4.0 AH batteries and 2 amp charger, often go on sale for 99$.
Once, I saw it at 79$ but waited till morning to order, and the deal was gone. Came back a few days later paired with angle grinder for 139$, and I jumped.
My lawn is small, but having enough battery capacity, even when my current batteries inevitably lose capacity is not a concern.
I can fully understand the capaciy decline stress of those with bigger lawns and less common baTtery systems, and why I chose Makita over other lawn tool offerings.
Ridgid batteries, charger and warranty, and adapters to run in MaKita ryobi maKe them my favorite.
Just got a Dewalt 8" polesaw with 4.0ah battery and charger for 229$.
Significantly less than the maKita or Milwaukee options which were the other contenders.
Doubt I'll acquire a Ridgid to Dewalt adapter anytime soon though.
But they also dont truly fully charge the cells, on purpose.
My Ridgid charger brings batteries to 20.5v.
Makita and Dewalt 20.6,
not sure about ryobi, yet.
21v would be a truly fully charged rested, open circuit voltage for 18v nominal systems, dewaLt ' 20v max ' included.
Keeping battery packs in the middle 20% to 80% range is best for cycle life.
Keeping baTteries cool helps greatly.
Every 10degrees C average temp increase, doubles the raTe of self degradation/capacity loss with lead acid, and lithium 'might' not be as extreme in this regard, or it might.
Self discharge also increases at higher temperatures.
Ill be busting out Makita mower in a few hours, its 4 baTteries are in an air conditioned space, around 80% charged. That garage is still 88f, and rising.
I'll plug in the charger and top them off first. Ill usually take a break, put mower in shade, take hot batteries with me into aircon'd space, take the other 2 once ive cooled off.
IVe not yet drained makita Batteries in mower till the LVD shut power down. I was expecting it as LED 1 bar had been hding for longer than expected, but i finished before.
Ridgid BMS seemed say below 16v was the threshold.
I try and avoid that level of discharge.
I have 4 makita and 4 ridgid batteries, one dewalt, one Ryobi.
I have made in USA 3d printed adapters to run ridgid baTteries in Makita tools and maKita batts in ridgid tools, and Ridgid batts in the now never used ryobi blower.
Ive a MaKita blower, whacker ,and hedge trimmer too, and often run the ridgid batteries in these and keep the Makita batteries in pairs on ' landscape day'.
I never place hot/warm batteries in charger, and try to stop charging, with the ridgid baTteries, when amps have tapered below 0.5. Ridgid's external wall wart power supply allow his luxury.
2 RIdgid 4.0 AH batteries and 2 amp charger, often go on sale for 99$.
Once, I saw it at 79$ but waited till morning to order, and the deal was gone. Came back a few days later paired with angle grinder for 139$, and I jumped.
My lawn is small, but having enough battery capacity, even when my current batteries inevitably lose capacity is not a concern.
I can fully understand the capaciy decline stress of those with bigger lawns and less common baTtery systems, and why I chose Makita over other lawn tool offerings.
Ridgid batteries, charger and warranty, and adapters to run in MaKita ryobi maKe them my favorite.
Just got a Dewalt 8" polesaw with 4.0ah battery and charger for 229$.
Significantly less than the maKita or Milwaukee options which were the other contenders.
Doubt I'll acquire a Ridgid to Dewalt adapter anytime soon though.