I'm looking to buy one of those little power banks to boost and jump start battery. But while I 'm at it, I would like the same unit to also charge the battery and trickle charge it as well.

I had found one not so long ago but can't find what it was.

Any ideas?

Would any of these work?

https://www.amazon.com/s/ref=nb_sb_noss?...rger+power+bank

Lithium battery boosters are not trickle chargers or battery chargers. If there was something like that it would probably be mediocre at everything. Better to buy a good trickle charger instead.

I will be doing a review tomorrow (I took some pic today) on this unit. Its a good unit with a very unique feature.

https://www.amazon.com/dp/B07212VPNG?ref=emc_b_5_t

i bought this crazy thing in the event of an emergency jumpstart. But most of its use is charging phones at the beach and laptops on the road. It does not replace my green battery tender Junior. Love that little thing

https://www.amazon.com/VETOMILE-Starter-Portable-21000mAH-Flashlight/dp/B073FD3NKW/ref=sr_1_1?s=automotive&ie=UTF8&qid=1521756584&sr=1-1&keywords=VETOMILE+800A+Peak+Car+Jump+Starter+Booster+Portable+21000mAH+Auto+Battery+Charger+Power+Bank+with+USB+charge+Port+and+Flashlight%2Cfor+Engines+up+to+6.5L+Gas+and+3.0L+Diesel+or+Pickup+Truck&dpID=41h22g1WhOL&preST=_SY300_QL70_&dpSrc=srch

some of the top end models of the noco genius will perform both functions (G15000 G26000) .
https://www.amazon.com/NOCO-G15000-UltraSafe-Battery-Charger/dp/B00PKIBVU0

However they are quite expensive and you are better off buying 2 separate devices.

Specifically all the jump packs you should treat as disposable devices that will fail or need replacement in a few years as the batteries go out, swell or otherwise die.

Whereas the charger-maintainer without batteries is a durable tool that you can keep using for a long time.