Yeah any contemporary charger these days will have a storage cycle mode. Lipos cost alot. Cant skimp on a charger. I have a B6AC charger. Still works after so many years. Has Storage mode.

Just it's underpowered, so it takes me very long to charge just one large pack. Well over an hour. Sometimes it will just time out.

I recently got my dual channel ISDT K2 Air. Can charge (2) 6s 6k mah bricks in under 40 minutes every time. $150. USD average pricing.
Maybe too expensive for your budget, but it will future proof you in this hobby.
I second the SkyRC B6AC for budgetary reasons.

Should fit the bill. Around $50. USD.
I have a legit one, not a copy. But the
2-line display seems outdated compared to my D6 Duo and K2 Air. ( with full color screen menu)
I am spoiled with 2 channel chargers. I wouldn't buy a single channel charger anymore.
>>>$150. is not expensive when you consider it is the same as
having 2 chargers.
