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Discussion Starter · #1 ·
And this is coming from a retired electronic technician, so I know! I have this Chicago Electric 12v jump pack I probably got 25+ years ago. Of course the rechargeable battery was shot so I ordered one I received today. Installed & worked fine, so thought I'd clean it up with damp cloth & some soap. Didn't get it wet, but air blew it off anyway.
After that, voltmeter & lamp didn’t work, charge LED stayed on! Even switched off still voltage on leads.
There was apparently just enough moisture on board inside, heat gun (low-warm air) & blow-off spray all was well.
My point is my experience 99% of the times it's always the simplest things. Even technician friends years ago would be stumped lots of times over something simple.
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I have 3 of these jump packs.
One for each vehicle.
Biggest Con is its heavy.
My first one is 12 years old and still works great. I keep them charged well about every 3 months or so. Very handy even on garden tractors.
$155 on Amazon but you can find them a little cheaper elsewhere.

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Discussion Starter · #3 ·
I have 3 of these jump packs.
One for each vehicle.
Biggest Con is its heavy.
My first one is 12 years old and still works great. I keep them charged well about every 3 months or so. Very handy even on garden tractors.
$155 on Amazon but you can find them a little cheaper elsewhere.

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That's a nice one. I think mine was $35 back then! If yours is heavy it probably has 3x power of mine (was 17 now 18AH).
Speaking of weird electronics, I was getting ready to dispose of old battery. It wouldn't take a charge even with 32 volts! So, I reverse charged it (rev/polarity) and it took it, so I reversed again and it charged. Next I'll load test it.

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Pretty handy to have around. I bought dad one years ago for his stationary engines. It died after a year or so though. I had one that lasted about the same. What kind of life span do you guys get out of them?
 

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Pretty handy to have around. I bought dad one years ago for his stationary engines. It died after a year or so though. I had one that lasted about the same. What kind of life span do you guys get out of them?
I believe you get what you pay for although I've heard the cheap harbor freight ones for $40 can last years. It's all about temperature storage and charging cycles. I believe rechargeable batteries need to be drained down ever so often.
My jump packs are high amperage, strong enough to start a diesel truck. My first one is 12 years old. The other 2 are like 4 years.
They have a meter on them to show charge status.
 

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The first one I had from way back used a little 12-volt cube power supply to charge it. That one did not last a long time nor did it work very well. The second one I bought had an internal supply so it plugged directly into an outlet, much better system. It worked great, unfortunately it was stolen during a garage robbery last year, bastards!!! I have not replaced it yet.
 
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That sounds like the one I had Tom.

The first one I had from way back used a little 12-volt cube power supply to charge it. That one did not last a long time nor did it work very well. The second one I bought had an internal supply so it plugged directly into an outlet, much better system. It worked great, unfortunately it was stolen during a garage robbery last year, bastards!!! I have not replaced it yet.
 
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