lipo packs Ul-1 and Blackjack 26

[sampit]

Hi, folks from the UK first post so go easy on me,

I wonder if you can help me
I'm seriously thinking about buying myself ether a BJ 26 or a UL-1 or even both
looks like a fun hobby.
The BJ 26 is available in the UK but the UL-1 are in very short supply so I may have to buy direct from the US if that's an available option, complete with any modifications you guys can recommend

What I would like to do first is to buy my lipo packs, but having a hard time knowing what makes, and spec are right and whats good and what's bad
so far I have looked at
7.4v
2c 20c 4000 mAh?
2c 25c 4000 mAh
2c 25c 49000 mAh
2c 20c 5000mAh
Trakpower 4900Mah 25C 7.4v Lipo Battery

the Trackpower look good but im not sure about lipos in hard cases will they fit in a UL-1 a bit expensive as well

Could anyone give me a link to buy two good lipo packs that will run either a Blackjack.26 and a UL-1
both in stock form at the moment , but I do like to tinker

hope that all makes sense

Thank you

Sam

[Fluid]

Several members in our club have had good success with the Rhino packs in their UL-1s (no one races the BJ26 here). I know that two 2S/3700/20C packs fit in the UL-1, don't know about the BJ. One member has tried the 4900s in the UL-1 and I believe they were tight but did fit.

The Rhino cells seem to work just fine with the Aquacraft/ProBoat RTR motors, and they won't break the bank. For high amp draw applications I have my doubts, but for the RTRs they have been a good value.

http://www.hobbycity.com/hobbycity/store/uh_viewItem.asp?idProduct=7651&Product_Name=Rhino_3700mAh_2S1P_20C_Lipoly_Pack

.

[Apples1]

https://www.rclipos.com