You could still charge at a decently low rate, which is better for a receiver pack anyway, if you went with most peak chargers.

The biggest problem with that charger in the pick is it's not really a charger. It's a power supply. It will keep putting power in the battery, even when the battery is done. If you forget about it being plugged in, bye bye battery. You need to use the utmost care when using those types of chargers.