hi, i just bought a robbe u47 and wondered if i could ask for some advice. im usually pretty good with rc and electronics, but on this sub, i cant for the life of me work out how to charge the batteries. is their a hidden charge point or do i need to take it all apart or..?
any help would be greatly appreciated, thanks

I am guessing you bought a built sub. If so how you charge the batteries will depend on how the sub was built by the original builder. As your from the UK you should post with pictures on the modelboatmayhem forum. Plenty of U47 drivers there.

Hi,
If it is the original dry chemistry batteries they recommended for the sub then you would simply look for the tabs on the batteries, connect correct polarities and charge accordingly. Please feel free to post some pictures, this would help us a lot as well.

regards,
Pete

Always open the sub to charge the batteries ,no need so far with Lipos which is nice on my Robbe XXI ,Lipos run far longer and are lighter than the standard battery,love them !

In my XXI the lipos are in a semi air sealed compartment in the forward section that is vented automaticly to the ballast tank each time it surfaces which is another nice feature of this designe.
If you where to look at my threads on the modified Type XXI the cats Meow hear on RCU you can get an idea of what I did,I charge the lipos without having to open the sub up ,there are 2 wirtes red and black that when the sub is turned off become hot directly from the lipos mains,the lipo charger is programed to ballance charge them and so far all is good,after extensive testing of course.

If you went with lipos you should get the same benifits that I do ,my lipos are 2 5500mah bats.

Dave