Leisure Battery Drain While Driving

[stim]

I noticed while driving the other day that my console was saying a drain of between -5A and -8A for my leisure battery while I was driving, instead of positive amps from charging, as I would expect. I had nothing at all plugged into any of the sockets in the van (apart from my phone on the dash USB port but this should be the engine battery anyway).

Is this normal?

 

[Wesel]

Normal with Bluemotion.

 

[Loz]

Explained here:

How-To install DC-DC charger to replace VW Split Charge relay

This guide takes you step by step through fitting the Travelvolts DC-DC charging kit for California leisure battery charging. Why fit this kit: VW are still installing their standard split charge relay on vehicles fitted with leisure batteries, however, the latest Bluemotion technology has a...

vwcaliforniaclub.com

 

[stim]

ok, interesting, thanks!

 

[Wesel]

I knew @Loz would explain this much better than me.