just a lithium ion polymer battery, most don't have any protection other than a fuse on the output, maybe the expensive ones have some sort of reverse polarity shut off..
On Wed, Jan 30, 2019 at 4:21 PM Ken Hohhof <[email protected]> wrote: > I’m not going to open it up, but my guess is it’s actually a 12V lithium > battery stack with very high current capability. There’s definitely some > smart circuitry in there, but to prevent connecting it wrong and to only > apply voltage once it’s hooked up to a battery. > > > > Keep in mind these things are only for short bursts of current to start > the engine. I think the manual talks about letting it rest for 15 minutes > after 5 tries, and only getting 20-40 tries on a charge. > > > > It does have a USB port for charging your cellphone, and a built-in > flashlight. > > > > There are 2 ways to charge it, USB or the 12V power port (we used to call > it a cigarette lighter) on a vehicle. USB method takes a long time. > > > > > > *From:* AF <[email protected]> *On Behalf Of *[email protected] > *Sent:* Wednesday, January 30, 2019 5:14 PM > *To:* 'AnimalFarm Microwave Users Group' <[email protected]> > *Subject:* Re: [AFMUG] OT - lithium battery jump pack review > > > > You have to wonder how they do it. High voltage battery pack with a huge > DC-DC convertor or what? Does not seem possible but my son has one and we > use it on construction equipment all the time. > > > > *From:* Ken Hohhof > > *Sent:* Wednesday, January 30, 2019 4:10 PM > > *To:* 'AnimalFarm Microwave Users Group' > > *Subject:* [AFMUG] OT - lithium battery jump pack review > > > > I was skeptical of a lithium battery based device that fits in a glove > compartment being able to jump start a big V8, but I picked up a NOCO GB70 > at Autozone for my son and it worked as advertised. > > > > At $200 it’s not cheap, actually more than a spare battery and a set of > jumper cables. But this gizmo is a lot safer and more compact. No sparks > to set off a hydrogen explosion, and no worries about reverse polarity or > shorting the cables together. > > > > He has an old Grand Prix GXP which is hard to turn over and also seems to > eat batteries every 2-3 years. Oh, and it’s wicked cold out. > ------------------------------ > > -- > AF mailing list > [email protected] > http://af.afmug.com/mailman/listinfo/af_af.afmug.com > -- > AF mailing list > [email protected] > http://af.afmug.com/mailman/listinfo/af_af.afmug.com >
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