Capacitor V Lithium jump starter?

Does your 100 have two batteries? If so. You can rearrange so it behave as 1 main and 1 as a dual battery. That way they can be linked with a solenoid or jump lead to start when needed. I wouldn't rely on a capacitor type as it actually has to first charge from the flat battery and then suddenly deliver exactly when needed to assist start. Sudden and intense, maybe, but it isn't a sustained crank ability at all. The lithium type are useful and can also be used as a power source WHEN charged. To make sure it is ready you must ensure it is charged when needed to be used. They can read as ok volts but have almost no charge delivery ability if low on charge. I prefer first option, the dual system.

I actually have a Repco capacitor jump starter and have used it twice, once on a quite dead Ranger 3.2 litre diesel and on a Falcon 6cyl ute. Worked both times.

I do have a secondary battery in the Ranger in the tub and have it with a larger Anderson plug for a set of custom jump leads but had trouble with the other end clamps so tried the Repco unit.

As to Lithium jump starters I have a concern with them. Recently went to use one I had in the shed to see if it was in need of recharging as it had been sitting there unused for about a year. Opened the storage case it came in and immediately noticed that the main case had split at the seem. Opened it up and the battery had swelled up quite a bit. In light of the disastrous Samsung mobiles a few years ago, at what point is it likely that this could explode or catch fire and maybe consideration needs to be made towards safely storing them in vehicles etc. No idea where I bought it and where it was made it anymore so can't chase them up over it.

I,ve had a mini jump start unit for about 6 years now. Only used it twice. Very handy as a back up battery for phone, bluetooth speakers, tablets or laptop. Holds its charge for a very long time (over a year) Was about $200 when purchased. I believe the new ones are a lot more powerful and have read some very good reviewes on them. I like the stats of the new Itech ....

jump starter

At few weeks back I went into Supercheap to have a look at the small sized lithium jump starters and was knocked back by the price. Basic starts around $200 for a small capacity unit and typical was $350 or more.

Supercheap Starters

Not a cheap piece of kit - almost as much as installing a basic dual system.