Litheli U20 battery charger

When you’re traveling, spending time outdoors, or keeping a backup setup ready, one charger that can also power connected devices has a practical appeal. The Litheli U20 charger handles two compatible battery packs, and its USB-C and USB-A ports let those batteries act as a portable power bank. It’s designed around Litheli’s U20 battery system, so the key buying question is whether you already use those packs.

Best use cases

This charger makes the most sense for someone who owns U20 batteries and wants fewer separate charging accessories. At home, its vertical docking positions keep two packs together while they charge, on a trip, the detachable cables make the unit easier to pack. The reverse-charging feature adds another use: insert a battery, connect a device through USB-C or USB-A, and use the stored battery power without a wall outlet. Picture needing to top up a phone outdoors when there isn’t an outlet nearby—that’s where this setup can be more useful than a charger that only charges batteries.

It can also serve as emergency backup for compatible gadgets. Worth considering if you want one accessory to charge U20 packs and provide device power from them. It may not suit you if your batteries are from another system or you want a power bank that works independently of a battery pack.

Product specs

The station has two independently controlled charging positions, so you can charge one battery or two at once. The product information says a single 2Ah battery takes 30 minutes to fully charge, while two batteries can charge simultaneously in one hour. It is rated at 100W, and the listing describes compatibility with all Litheli U20 series batteries. That makes battery-system compatibility the main constraint, rather than a minor detail.

For device charging, the built-in USB-C and USB-A ports provide the reverse-charging connection. The charger also includes protections against over-voltage, over-current, overheating, and short circuits, plus air cooling intended to help manage heat during charging. Its lightweight, compact design and detachable cables are aimed at easier packing, although no dimensions or weight are specified. The listing doesn’t give USB output details, so don’t assume a particular charging speed for a phone or laptop based on the 100W rating alone.

Where it shines

The useful distinction here is that this is more than a two-slot battery dock: it can also draw on an inserted U20 pack to power a connected device. Would that replace every separate power bank? Not necessarily, since the reverse-charging function depends on having a compatible battery available. But if you already carry U20 packs, getting battery charging and a backup power option from one unit may simplify what you bring.

The vertical plug-in design also keeps the batteries in dedicated positions, and each slot operates independently. That’s a straightforward advantage when you want to charge one pack now and another later, rather than relying on a setup where both positions must be used together. On the spec sheet, the fast charge times are appealing, in practice, the stated times are tied to the battery capacities and charging conditions given in the product information.

Is it worth it?

The Litheli U20 charger is a focused choice for people already invested in the U20 battery range, especially if they value dual charging and occasional device backup in one portable unit. Compared with buying a basic battery-only charger, its USB ports add flexibility, compared with carrying a standalone power bank, it makes more sense when you’ll already have U20 batteries with you.

The tradeoff is just as clear: it isn’t described as a universal charger, and its power-bank function relies on an inserted battery. Choose it if those limits fit your setup and you want to charge U20 packs while keeping a way to power a phone or other gadget nearby. If you need a charger for mixed battery systems or a self-contained power bank, a different type of accessory is a better match.