thanks, cost is $99

My subaru 3 liter gas car had a dead battery and would not start.

AAA jump started it, and I drove for 30 minutes. The car now starts and runs fine.

cause of dead battery:
The car had been sitting for a week, after only going to the grocery, less than 1 mile away, a couple of times before.

The car has a 3 year old interstate battery.

I want to have a jump starter at home:
My car jump starter battery, top of picture, is dead and will not take a charge

A replacement 12v 10Ah SLA battery for the jumper pack, costs $24
Should I buy the replacement battery?
or
Should I buy one of the new, small LiIon jumper packs instead, and if so, Which one?