On Sat, 8 May 2021 20:21:53 +0100, newshound
wrote:

On 07/05/2021 22:26, RJH wrote:
Would it be OK to charge on of these:


https://www.walteronline.com/en/tool...mpressor-p3155

(jump starter/compressor/light/USB) by connecting the jump leads to a car
battery charger, rather than use the supplied AC adapter?

IME these are pretty indifferent products, they don't contain much of a
battery, and the compressors are feeble too. Being lead acid you do have
to keep them charged regularly.

+1

I have a couple of Lithium Ion car starters, and they are brilliant. The
smallest is literally pocketable, about half the size of a standard
paperback and will still fit in a jacket pocket with the leads and big
croc clips. This is more than enough for a 1.3 petrol engine.

The larger is about 20x10x6cm and I am sure would do a large petrol or
small diesel engine.

I have one also and used it several times in succession (as an
experiment) to start step-daughters Seat Ibiza when something (we
think the inbuilt radio) was killing the battery every 3-4 days when
it was left unused. You would literally *just* get a weak ignition
light yet the lithium pack would allow it to start on the button.

IME these hold their charge very well, I probably only check them once
or twice a year.

I was asked to move the kitcar by some utility co and it hadn't moved
for months. Whilst the battery was 'ok' and would still have started
it had it fired up quickly, it didn't and so I just nipped in and got
the lithium pack, hooked it up and it span the engine up long enough
to get some petrol up and away it went. As you say, that hadn't been
charged for months yet even after that (prolonged) starting, it was
still showing a couple (out of it's 4) lights.

The tyre pump that comes with my Honda is pretty good, and I have
something like this for my 3500 van.

https://www.amazon.co.uk/AmazonBasic...dp/B074DD8NVY/

which has a great deal more "oomph" than the toy things that are
sometimes on offer at petrol stations.

I have also a separate 12V pump that has also worked well for several
(well 4 g) tyre complete re-inflations on the trot (after installing
Punctureseal etc). Many cheaper things would have melted before that.

Like yours it allows you to set the desired pressure and switches
itself off when it gets there (just as well as it is quite loud so I
prefer to move away when it's running for any prolonged period). ;-(

I keep both that and the single mechanical foot pump in the car.

Cheers, T i m