Dewalt battery adaptor charging help

[RobTi]

Hi I have a pile of the old dewalt 18v cordless tools and my last battery died, so if I buy the 18v to 20v adapter and a new 20v battery can I plug the battery & adapter into my old 18v charger to charge or any help on what you did to get a new battery for these ?
Thanks

 

[Deleted member 174758]

It is not safe to charge modern 20 volt Lithium Ion battery packs on chargers designed for NiCd and NiMH battery packs - you risk overheating the batteries and having a fire. Search YouTube to see how violent a Li-Ion battery fire can be. So if you go this way you will need an appropriate battery charger

Your old batteries can be recelled and there are a number of firms in both the UK and USA offering this service (I am assuming that you are somewhere like the USA because DW Li-Ion batteries in Europe are sold as "18 volt", whilst in North America they are sold as "20 volt")

The disadvantage of using Li-Ion
batteries on older tools through an adaptor is that the tools contain no battery protection circuitry. That means it is possible to drain a Li-Ion battery down to the point where it can no longer charge (about 1 volt), at which point your battery is toast

 

[RobTi]

It is not safe to charge modern 20 volt Lithium Ion battery packs on chargers designed for NiCd and NiMH battery packs - you risk overheating the batteries and having a fire. Search YouTube to see how violent a Li-Ion battery fire can be. So if you go this way you will need an appropriate battery charger

Your old batteries can be recelled and there are a number of firms in both the UK and USA offering this service (I am assuming that you are somewhere like the USA because DW Li-Ion batteries in Europe are sold as "18 volt", whilst in North America they are sold as "20 volt")

The disadvantage of using Li-Ion
batteries on older tools through an adaptor is that the tools contain no battery protection circuitry. That means it is possible to drain a Li-Ion battery down to the point where it can no longer charge (about 1 volt), at which point your battery is toast

Thanks I’m in the UK sorry for the confusion you wouldn’t happen to have any links to refurbished batteries and thanks for setting me straight about charging
Thanks

 

[Deleted member 174758]

There was a firm called Recell, plus a couple of others I've used. I am on my mobile at present, so it isn't do easy for me to do the lookups, but when I get home I'll post some links.

There is also the option of non-OEM batteries, but with those I've found that what you gain in lower cost you tend to lose in shorter life and/or weaker casings, so, at least from the point of view of trade use, you don't gain anything in the longer term

 

[big-all]

if you do use generic rather than a geniune dewalt adapter in a blister pack remove the battery every time you leave the room