NOCO 2X2 Battery Charger

[Sisu9]

I keep my Porsche 997 behind my Defender Td5 in storage for the Winter. Given it's a pretty compact space I thought about buying one trickle charger that could maintain both batteries in-situ in the respective cars. This NOCO 2X2 would seem to be a good solution. Does anyone have any experience of these:

https://no.co/genius2x2