An easy way to tell if your charger is capable of charging both chemistries is to remove the gray dash top piece - the part with the cup holders and see if your charger has a selector switch. It comes out via 2 screws in the motor compartment. Below is a picture of the charger in my 2002 e825.
The cleaned black disc in the picture - the area where the dust has been removed is where the switch cover would be. This charger did not have the switch and required an update.
I spoke with Zivan and they said an update would be between $130-$170 And that it would be 4-6 weeks to complete. They also offer an expedite feature for $20 extra to complete it in 2-3 days. I paid the extra $20 and got the charger back in just over a week. It was $128 out the door. My initial contact with Elcon (the Zivan US rep) was via email then a phone call to confirm everything before shipping.
This update also includes a 7/14 day auto on timer for both types of batteries. This makes the charger switch on automatically after 7 or 14 days so the life of the battery is maintained while the Gem is not in use. This was an issue that basically killed the batteries in my GEM before I bought it.
The picture at left shows the same NG1 charger after the update. A switch has been added and a stick on cover has been added covering the switch. Additionally 2 white stickers have been placed on the cover of the charger indicating the update and settings for the charger.
Under the new cover a multi position selector switch is used to choose between a GEL or wet battery. To change between battery types one selects "C" for Gel batteries or "F" for flooded/wet batteries. (see photo below)
The benefits of the update are:
- Ability to change between battery types and keep the same charger
- Self start up timer to automatically reengage charger as to prolong battery life when not in use over an extended period of time
- Better updated charging curve for the specific battery type and brands