cordless drill charging

[pudgybear]

I know it's been discussed before but I need the information again: Can batteries be left in the charger without damaging them. Thanks Bob

 

[powertrip]

Ultimately depends on the charger. Some brands have a "maintain" mode and others don't. If you're in doubt just take them off after a charge and store them above 40 or so degrees.

 

[6PTsocket]

Lithium batteries are permanantly damaged from over discharging and can catch fire from over charging. For them to be usable, there must be circuitry in the battery or in the charger to prevent this from happening. The charger monitors the state of charge but will not let it overcharge. It can sit on the charger. Old NiCd chargers often switched to trickle charge to maintain a fully charged battery and over a long time might shorten battery life. Even worse fo NiMh.

Sent from my SM-G900V using Tapatalk

 

[Ign]

Ultimately depends on the charger. Some brands have a "maintain" mode and others don't. If you're in doubt just take them off after a charge and store them above 40 or so degrees.

For Milwaukee, YES

 

[dogdog]

It dependents on the battery and the charger...

Most cheaper charger for Ni-Cad / Ni-MH don't have a smart charger that cut off the electrical and will over charge them in time...

Most Li-Ion are ok... I have the newer craftsman chargers for their 19.2V Li-Ions and have left battery in their charger for weeks without any ill effect... didn't over charge.. that is because the battery them self have a voltage cutoff as well...

I know the kobalt 24V batteries have that feature as well...

the Chaplin 24V battery (some li-ion for the Chaplin garden sprayer) also... why, cause I use the dumb Chaplin charger to charge the kobalt 24V batteries, and the battery disconnects the supply electricity when it is charged....I have left the kobalt battery in the Chaplin Charger for about a week... no ill effect... the Dumb Charger just supplies a 25.2V ( for 6 Cell 24V Li-ion batteries) The battery them self have a controller...


Pssst.... I have heard some Mikata batteries requires a Smart Chargers, that means the batteries them self does not cut off... so ... YMMV... I think that is on the recall ( some of their batteries)

 

[bert1913]

I use this timer whenever I charge batteries: https://www.amazon.com/gp/product/B01D2PYU96/?tag=atomicindus08-20

 

[LB-1911]

I know it's been discussed before but I need the information again: Can batteries be left in the charger without damaging them. Thanks Bob

Depends - As previously mentioned - Tool brand & battery type would be useful.

Ryobi ?
Porter Cable ?
DeWalt ?

Battery Type?
Nicad / nickel–cadmium
lithium-ion battery / Li-ion
nickel metal hydride / NiMH or Ni–MH

Have you checked the charger model number against any recall lists?

 

[GypsyR]

I have a fair variety of different batteries and chargers. My rule is that if the battery is warm at all long after it's done charging, it comes out. If they stay as cool as they would be sitting on a shelf, they stay in.

 

[Rabid Badger]

All major tool brands' lithium batteries can be left on the charger. HOWEVER, if you aren't going to be using them for an extended period (weeks or months) it is better to leave them at roughly 80%. At a full 4.2V charge the lithium ions will slowly build up on the cathode, reducing the capacity of the cells and eventually killing them altogether.

In fact, if you have enough batteries on hand to pull them off the charger at 80% and don't use them in extreme heat or cold, modern lithium cells can last more-or-less forever.

 

[engineer2]

My Makita charger appears to shut of when it's done. I generally take the battery off when done but sometimes leave it on for a few days. If the power goes out momentarily, the charger will do another charge cycle, but will only top off the fully charged battery. I have a Chinese imitation 5 AHr that likes to go through two charge cycles to get to 100%.