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Renault Master Battery drain

33K views 11 replies 3 participants last post by  davelee002  
Assuming you have a 100Ah Battery & you drive for long enough to recharge fully, 0.8 Amps will kill enough of the capacity for it not to start in 100 Hours or less. Which is 4 Days Max. Even 0.4 Amps, IMHO is too much.
Typical residual drain is more like 0.05 - 0.1 Amps to run clock, radio memory & Alarm / Immo.
Tacho seems like a good idea.
I have also known Alternators to go leaky & one can't turn them off. :frown2:
 
Can you now re-route those feeds to be switched via the ignition? So that current is only taken whilst vehicle is charging.
The tacho of course, is designed for vehicles driven daily, so drain of that order was never an issue.