Portable DC Source For Testing, Instead Of Hauling A Car Battery.

[Oka]

Sometimes I would need a 12V battery source. I either go to the car or haul out a spare battery that might have gone low charged. I would think there should be a very portable, palm-size unit I could plug into the AC outlet, or an adapter to my battery charger to produce a 12V power. Hope I asked this question correctly.

Cheers.

[Brett San Diego]

Search Amazon for "power probe." Hundreds of these on the market now with varying levels of functionality. Power Probe is a name brand, so you may find a lot of this one brand, but there are a lot of less expensive knock offs.

Brett

[goldxc70]

Sometimes I would need a 12V battery source. I either go to the car or haul out a spare battery that might have gone low charged. I would think there should be a very portable, palm-size unit I could plug into the AC outlet, or an adapter to my battery charger to produce a 12V power. Hope I asked this question correctly.

Cheers.

Portable jump starters (aka battery boosters, emergency boosters, battery jumpers, jump boxes) often have a 12V outlet. Some of them also have inverters, flashlights, USB recharging ports, tire inflators, etc. Of course, most (there are some that use ultra caps) are just an AGM battery in a box although Lithium Ion batteries are now taking over. Here is one brand with a range of models: https://no.co/products/power/boost

[Astro14]

Portable battery charger if the work is being done in the car. Something like this:

https://www.amazon.com/Schumacher-SC...dp/B0797KK3N2/

Power supply if the work is being done on a bench. Something like this:

https://www.amazon.com/gp/product/B000Y8GFIE/