These chargers are great. I use them on v2, mig batteries. This company is the best out there too!

Works well with 808 batteries .

Good product. Some of the chargers last for a year or longer. Others don't last that long.

These chargers usually last several months

I was a little hesitant to use these rather than the ones that plug in.
I ordered 4, bought two duel USB plug in chargers. I like to always have extras charged and ready to go.
I love how fast these charge.
When you charge, both light will be red, on the charger itself and the tip of the battery. When fully charged, only the
the charger will turn green indicating it's fully charged. Battery will still have a red light on the tip.
These do not last forever. Just like the batteries, they need replaced periodically.
Just simple maintenance.
I highly recommend this company and product.

These can last for a year or a month

Another company I used had plugs instead of USB cables.
I want to wait till I used these before leaving a review.
I bought duel USB plugs. I have 4 charges for 6-7 cartridges.
I charged 4 at a time and always have another case already charged.
These charge great in a short time. Just a reminder, if you throw on a battery and if it don't light up, try another charger.
These do not last forever and must be replaced periodically.
Theses charge faster than universal charges. I pull out the duel USB plug when they are charged.
The worse thing you can do is to over charge. I recommend being there while charging for safety and to pull it off as soon as the battery is charged.
I recommend more than 2 for frequent smokers. 4 is working great for me.

Nifty charger, pleased with the purchase, thanks Apollo!

Great charger works great with V2 battery.

Great customer service with communications and deliveries! This product does a good job with Challenger batteries. Will buy again!