LiPo for E010 / JJRC H36

[Bad Raven]

As most will know I use a lot of these for the after school (when there IS a school!) club I run.

So many that the weekly charging session might have eleven 6 way chargers on the go at once for several changes. Currently after two years running weekly or twice weekly in term time I am finding one to three failing every session, not an issue (in fact quite good!) IF there are replacements available.

The original 6mm brush motored E010 uses a 150mAh 1S flat rectangular, mCPX type PH connector, that was much better than the long stick rubbish used by Inductrix, etc, at standing the abuse that kids can give them. (I put that down to the much better cross sectional area)

The 7mm brush motored E011 used a larger 260mAh flat rectangular, also PH. With the demise of the E011 nearly a year ago now that source seems to have dried up.

I use a 3D print battery holder on all the Whoovers that would accept either.

China to UK supply of the Eachine branded E010/E011 cells has always been spasmodic, and looks to have been severed "by Brexit", at least in the short term.

UK located supply like EBay, etc is more based around JJRC branded or effectively unknown brand cells, usually more expensive, and definitely FAR less reliable in operation.

Other sources of ones that could be used include the iffy stick type and I don't want to go there, and possibly the flat rectangular 300mAh 1S used by the original mCPX, a type not known for much reliability either! (And with the Heli now replaced and ageing out getting harder to source)

450's are too long and heavy. Obviously shape avoiding blocking ducts and weight are factors.

In case I have missed a source, any ideas please?

Incidentally, people moan/moaned bitterly about brush motor life, but these Whoovers are abused totally and yet with overall 30 plus owned by boys and the 40 I now look after, obviously four per model, approaching 300 motors, I have only had to replace two failed motors.

Given these get hairs and dirt wrapped into props even though the floor is washed before any session, and with 12 year olds at the sticks sometimes are are run on till they seize, extremely hot, that level of reliability is IMO quite staggering!

And only three failures of PCB, one where the radio frequency drifts with temp so bind is lost, one believed an ESC blown, the other unknown, but it tries to move backwards even though props and rotation are correct. With mine on a X12S and multi module I can actually set mine TO reverse on full stick back pitch, so I assume the flight controller has failed that way, effectively full back stick!