Shido fitted this evening. Banner on the trickle charger for another week and still not enough amps to start the M3W. Will try a reset charge.
1. Fitted the battery tray fine, although the battery strap covered the test button. As the Shido is a little shorter I added some more foam padding to the strap to uncover the test button.
2. Very fiddly to refit the +ve leads until I realised I could unscrew the terminal, mount the leads to that separately, then screw that in!
3. Started the car in half a turn.... 14.1v on the voltmeter... success!
(4. Must remember NOT to plug in the trickle charger! It probably wouldnt do the dilithium crystals LiFePo much good!).