A couple of months ago I had a dead car battery (thro lack of use). I do have jump leads in the MH somewhere but couldn't find them - still can't!

I'm wondering about buying something like the NOCO Boost HD GB70 battery pack, which I think might deal with a small anxiety I have regarding batteries.

I stay off-grid a lot and sometimes the batteries (2x95 with a 130 solar panel) aren't as charged as I'd like. But that may just be because the difference between a fully-chatted battery (12.6v) and a soon-to-be-knackered one (under 12v) seems miniscule to me.

So I'm thinking this NOCO GB70 would not only be backup for a dead vehicle battery and a power source for tanking up various electronics, but I could also use it to pump up my leisure batteries if my worst fears were ever realised and I'd no power for heating, say.

Am I right in thinking it could be used for this? Are there any problems using it on a 2-battery system? Would it have to be connected to the red of one battery n the black of the other? - that might be a problem as the leads appear to be quite short.

There's also the GB50 which is cheaper and lighter... My engine is the 2.3 ducato

GB70
https://www.amazon.co.uk/NOCO-GB70-U...c=1&th=1&psc=1

GB50
https://www.amazon.co.uk/dp/B07MVY7K...RoChKkQAvD_BwE

It will charge the batteries in small items Jean. Phones and the like.

It is not really a substitute for a leisure battery even for a very short time. What it will do is give a quick burst of power sufficient to turn you engine over even if that battery is pretty flat. They say it will power a tyre inflator, it may do but not for more than a few minutes. At a glance I don't see the capacity of the battery in it but with that info it won't be hard to work out what it can do. I'll have another look.

It has very limited storage, as the physical size indicates, but it is capable of giving a short burst of high power. It wouldn't crank a reluctant engine for very long. I can't say how long but you could ask the question.

I can't see it's storage capacity even on the data sheet. 40 jump stars is quite a claim. Maybe I'm misjudging it. It's a bit expensive to take the chance on. I'd ask some questions.

I would think a brand new hefty lead acid battery would struggle to do that much, let alone a puny little thing like that !

I was thinking it maigh jump start a warm scooter engine which was in perfectly good working order, maybe Andy.

I wish I could see the battery capacity.

I looked at these a while back. My car is a Mehari, 2CV based. It's always hard to start on a very cold morning or a damp one. I ended up buying a proper battery charger with a good boost capacity. It cost as much as that little box but it will turn my car, my van or anything else, over for as long as it takes to get it going. Won't do Jeans job though.

A spare battery would also be a good option for jean as you say.

What about these bigger battery based boost start things. I know nothing about them. This, just as an example: https://www.amazon.co.uk/Ring-RPP148...motive&sr=1-23

Find yer jump leads Jean.
I have a set in each vehicle and another set for people who want to borrow. Plus a spare set.

Ray.

Yes. I always carried leads long enough and heavy enough to reach from the leisure batteries to the engine battery, and have used them a few times.

Not required now for that job since RV are well equipped and have a button on the dash to divert the leisure power to the engine battery. My boats all had that too. Very useful.

Don't knock it 'till you've tried it. I bought a 'jumping jack' , similar to what jean is talking about , when they first came out a few years ago . i didn't get a chance to try it on the MH as it never whet 'flat' but I did start a completely flat 2.5 litre car with it . It had been lying up for some time so the battery wouldn't even light up the dash but that little pack easily turned it over and got it started . ( The scrap man was coming to collect it ) I have also used it twice to start our Mitsibushi Grandis , the kids use this big wagon for the band gear but they have a habit of leaving the interior light on after unloading it. I am guessing that the one Jean has her eye on is even more powerful, I would guess it'll do the job, but hey, it's very expensive .

The GB50 has a 35Watt-hour battery so about 3Ah at 12 volts. The GB70 has a 56 Watt-hour battery. While it may operate as a jump starter it will be of little use as a source of power to replace your hab batteries.

I wasn't knocking Alan. I said that I thought it would jump start a healthy vehicle. I did question the idea of 40 on one charge.

Thanks for the input folks. The reviews I'd read of the GB70 seemed to confirm what you say Alan (Gretchibald) but if it wouldn't be of much use to tank up low leisure batteries (I wasn't intending to use it AS a leisure battery) then it just becomes rather expensive jump leads!