[RE-wrenches] Deka Duration batteries

[Bradley Bassett]

I've just heard that WM is using the Deka Duration batteries. At AEE we had
a very good relationship with MK Battery and I brought in the Deka Duration
to sell without really looking at all the potential issues first. However,
I did become aware of them after looking at how to install them in detail.
I'm curious how anyone does this with multiple batteries. I came up with
lots of configurations trying to get around the extreme lack of wiring room
in stacked batteries. I ended up doing drawings showing them stacked on
their rear end on the floor 3 deep from the wall with a battery combiner on
top of each 3 stack. Contact with tech support was always referred to the
Italian company and every time I received a very condescending and arrogant
response. Then I finally read the warranty in detail, unfortunately after
selling some, and having to buy them back. Turns out that at that time
(still?) the warranty excluded in entirety any system installed with an
inverter that did not have closed loop comms with the battery. Also the
temperature range to stay under warranty was basically room temperature
only. After discovering all of these issues I decided that we would no
longer carry them. I will say that I had no problem getting one to
communicate with my XW+ inverter through the gateway CAN bus. The one that
I ended up with has certainly worked fine, but of course is not under any
warranty, and never has been since put into operation with an open
communication inverter in a utility shed that gets down to 40°F.

Brad Bassett
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