Thanks Bill, love your articles,
Bill do you still recommend the Hobby star 3S batteries?

+1 for long time storage in an ammo box. Tip; make sure you remove (part of) the rubber seal inside the lid. This will prevent pressure from building inside the box in the unlikely event of LiPo combustion. Will try to post some pics later but somehow are not allowed.

I have only used 2S HobbyStar batteries in the past in my 4WD SCT and they tend to last about 6 months before they need to be replaced, which is typical for most brands of budget batteries that I have used.

I only recently started testing 3S and so far I am very pleased, because 3S is significantly more efficient, I wouldn't be surprised if the battery lasts a year or more!

I bought a set of the ChinaHobby g+ 55c batteries. I would have preferred there 70c because there is good data on those but alas Sold out. Gonna take a bit of a risk. $45 shipper post tax Though seems very reasonable.

Just an example of an ammo box as Lipo Safe;

Sounds logical!

Can anyone advise what's the best rechargeable AA batteries to use in your transmitter? Or it doesn't matter?

Many brands of Tx's are not able to use AA-NiMh because the voltage is too low and performance will suffer with excessive glitching,etc... I have had success with using AA-LiPo with AA-Dummy cells to get the voltage right, just need to verify the max voltage allowed for your Tx and use the appropriate cells to get the best possible performance:

I use Eneloop NiMh batteries. They have the ease to charge w/o the need of balancing and have almost the same self discharge qualities of a LiPo.

awesome lipo storage

I use the same but cut drywall for three battery compartments in an ammo box, and a larger one in a metal toolbox. Should keep one battery from setting off the rest if it goes up.