Power Bank with pass-through charging

[JohnClimber]

I've realised if I am going to get a dynamo hub I'm going to buy a new Power Bank but one with a "pass-through charging" ability.

The Maplin's one that I've got http://www.maplin.co.uk/p/lithium-ion-6 ... bank-n48lk doesn't give off charge when it has power going into it.

So, which units Power Bank available here in the UK has the "pass-through charging" capability which gives off charge while charging at the same time?

Thanks

[johnnystorm]

The 7dayshop one is OOS for now. :(

I got a 2200mah one from B&M which does but its a small battery and slow to charge my phone. It can keep pace with the phone though.

Mountainbaker's Anker unit (from Amazon) does but don't know if they all do....

[mountainbaker]

Yeah, that Anker one is great, as it has a 2A output, which charges stuff fast, but it's a brick. Great if you don't have a revo (I don't). But if i had a revo, I guess a small duracell one, I got one in tesco, it can charge and be charged simultaneously

[ianfitz]

I've started using an anker 3000 with sp hub it appears to charge and discharge at the same time. But that's a guess based on how many percent it will charge when used with the hub or not.