What is the difference between the 3 charger options for the electrolarynx devices?
The trickle charger is just a 2-place 9v constant current charger. It can charge one or two batteries at a time, and is fine for slow-charging lower capacity batteries up to 180mAh. This charger can not charge the higher capacity batteries, such as the 260mAh that come with the upgraded chargers. Batteries should not be left on it for over 20-24 hours max. The dual-voltage trickle charger has a switch that must be turned to select 110 or 220v. The other two chargers automatically select it. The Rapid charger is made in China, and can charge one or two 9v batteries in about an hour or two. This is a small wall-plug charger, convenient for travel, but due to the fast charge, the batteries will wear out slightly faster. Batteries should not be stored on it. The SmartCharger(tm) 9v battery charger is a medical grade dual 9v charger made in the USA. It can charge one or two batteries at a time, and charges the typical battery in 3-4 hours; high capacity batteries charge in 5-7 hours. This u
