Charger for jump starter

Tiny
PCULQUI
  • MEMBER
  • 2005 TOYOTA SIENNA
  • 3.3L
  • V6
  • 4WD
  • AUTOMATIC
  • 119,000 MILES
I purchased a portable vehicle jump starter. I've seemed to have misplaced the charging block. Can I use a cell phone charging block to charge up my jump starter?
My vehicle jump starter is 15V~10A.
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Monday, March 29th, 2021 AT 4:53 AM

6 Replies

Tiny
CARADIODOC
  • EXPERT
Nope. Most cell phone chargers put out around 5.0 volts, and they usually use a different type of plug. The first thing I'd look for is a charger for an older cordless phone They typical developed over 12 volts to run the base unit. You can also look at some chargers for older laptop computers. Those commonly developed 19 volts. Your battery pack has regulating circuitry inside, so it will tolerate the higher voltage.

The next item is the plug style. The most common for battery packs is a small round plug, about a half inch long, with a hole in the middle. Once you find that, you also have to look at the polarity. If you aren't sure of that, just plug it in and try it. Most battery packs have some type of light that turns on to tell you it's charging. If your charger is of the wrong polarity, no damage will occur, but don't leave it plugged in as it could overheat after a while.

I have two battery packs, and both have a symbol next to the charging jack to show the correct polarity. Today most chargers have the same symbol. If the two symbols are the same, the polarity is correct. This drawing shows the symbol. It's the location of the plus and minus signs that are important.
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Monday, March 29th, 2021 AT 6:42 PM
Tiny
PCULQUI
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How about newer laptops, can I use that plug to charge the jump starter?
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Monday, March 29th, 2021 AT 9:44 PM
Tiny
CARADIODOC
  • EXPERT
Does the plug match? Did you look at the polarity symbols? Did you try it?
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Tuesday, March 30th, 2021 AT 5:01 PM
Tiny
PCULQUI
  • MEMBER
Now, I found a plug that fits. I can't find any info on the block but the jump starter is charging. I guess as long as is charging, it won't ruin the jump starter?
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Wednesday, March 31st, 2021 AT 3:49 AM
Tiny
CARADIODOC
  • EXPERT
Should be fine. The battery pack watches the internal battery's voltage to determine when to stop charging it. That isn't affected by the charger's voltage.
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Wednesday, March 31st, 2021 AT 7:42 PM
Tiny
PCULQUI
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Okay, thank you.
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Thursday, April 1st, 2021 AT 7:15 AM

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