This is the only automatic Lumedyne Charger that will charge the battery first and also cycle on automatically each day to top off the Battery (or Batteries with the CU4A Adapter). This way the connected Battery(ies) are always ready to go without having to "top them off" before a shoot.
This is an Ultra fast charger and stops charging based on a Delta Voltage technology rather than using the PEPI circuit in the battery. This Charger is compatible with all generations of NiCd and NiMh Batteries and is designed to keep the Lumedyne Batteries fresh and ready for the longest possible lifespan.
DO NOT USE WITH LIFEPO4 BATTERIES or DIY Batteries - while it should not release the "magic" smoke, it would not work correctly for sure...
The CU4A mounts on top of the CU1Z Charger to expand its single Battery capacity into four Batteries at once. This Adapter is not a charger by itself but does work with the Auto Charger to allow up to four Batteries to be automatically maintained and topped off without having to swap Batteries around.
The CU4A does have two helpful indicators that show that the Batteries connected did reach a full charge level and another that warns you if a bad Battery is plugged into one of the connectors.