Power tool battery

John-MI · Mar 25, 2020

Can you charge a power tool battery off a pickup battery to get by until my charger gets repaired?

Geo-TH,In · Mar 25, 2020

Dewalt makes a charge to charge 18v from 12v cigarette lighter.

Steve@Advance · Mar 25, 2020

I wouldn't try wiring it direct.

They do make 12v chargers though.

Russ from MN · Mar 25, 2020

I use an inverter to change to 120 and then plug in the regular charger, doesn't take a very big inverter.

Janicholson · Mar 25, 2020

It might work, even then you are risking the battery from over voltage uncontrolled charging, or an internal controller that gives the charger "permission" to charge. Jim

RM-MN · Mar 26, 2020

Why don't you tell us what tool made by what company. The answer is maybe since we don't have enough information to make a real decision.

Mule Meat · Mar 26, 2020

(quoted from post at 19:45:43 03/25/20) I use an inverter to change to 120 and then plug in the regular charger, doesn't take a very big inverter.

Won't work. He is waiting for his charge to be repaired.
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Short answer. Look at the battery. If it has 3 or more post (contacts) then no it cannot. The battery is charged in stages and uses each post to charge. And two + & - to power the tool.

BarnyardEngineering · Mar 26, 2020

(quoted from post at 18:02:59 03/25/20) Can you charge a power tool battery off a pickup battery to get by until my charger gets repaired?

Depends. What voltage and what type of battery?

18V anything... Nope.

12V, only if it's a Nicd or Nimh.

Lithium batteries have protection circuits that work in conjunction with the charger and the tool. Can't easily charge them, and overcharging individual cells can cause fires.

Power tool battery

John-MI

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Geo-TH,In

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Steve@Advance

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Russ from MN

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Janicholson

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RM-MN

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Mule Meat

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BarnyardEngineering

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