The problem is if you run the battery too low, the battery chemistry just won't accept the amount of power especially at low amps from a battery charger you are feeding it. It really depends on how far the equilibrium point of the battery electrolyte had changed.
With some marginal battery.. even if you jump start and say drive the car from YVR to Hope and back.. The battery will hold the charge during the car is on, but the battery will still discharge itself after a few days because the battery chemistry can only store the power for a while, after that the equilibrium falls back.
Honestly it is a payoff issue.. a new battery is about $100 (even an OE Varta one for a BMW).. a charger is about $30-$75.. with the question of the status of each battery cell and the age of the battery is unknown.. sometimes it is just cheaper and easier to get a new battery.
Quote:
Originally Posted by gretzky is this a good enough charger? MotoMaster Automatic 10/2A Battery Charger | Canadian Tire
i am thinking of getting this thing to charge up my battery till its out of storage in spring time, i have never used a charger before but im guessing its the same thing as a battery "tender" as the guy said in the second post??
would be so much easier to charge the battery instead of jump starting it and then letting the car run for 30 minutes to charge the battery up |