As a major fallback I've got a sip lead acid jump pack
https://www.halfords.com/motoring/batte ... IIEALw_wcB
Which is a beast last summer the wife's car battery dropped dead in Tesco as in dead short internally so went from good to dead dead... I walked home and returned in my car quickly established the battery was fubar and wouldn't jump off at all...
Removed her battery and by the medium of zip ties & insulation tape I fitted the sip jump pack on the battery tray of her car secured with ties then clipped the clamps to the battery positive and negative terminals and bound in tape to prevent the live touching the metalwork in the engine bay.. it started and run fine on the 22ah battery to get it home
![Mr. Green :mrgreen:](./images/smilies/icon_mrgreen.gif)
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That’s the way to do it - adapt and survive
![Smile :)](./images/smilies/icon_e_smile.gif)