wayneakp Posted January 3, 2010 Share Posted January 3, 2010 Hi I have kept my boat in the water for some out of season cruising. I have shore power running heaters and a dehumidifier. However, thinking on the safe side I have turned off the power to everything else. I am now wondering if I should leave the battery charger running also? You comments would be appreciated. regards Wayne Quote Link to comment Share on other sites More sharing options...
Antares_9 Posted January 3, 2010 Share Posted January 3, 2010 If it's a decent one that will just give a float charge to maintain the batteries once fully charged then it is better to leave it on Wayne. Quote Link to comment Share on other sites More sharing options...
jimbo Posted January 3, 2010 Share Posted January 3, 2010 Do make sure your bilge pump still has power or it may end in tears! Quote Link to comment Share on other sites More sharing options...
Julz Posted January 3, 2010 Share Posted January 3, 2010 Not exactly the same as were caravanners, but if we leave our leisure battery to its own devices without any top up charge, its protection device will fuse the system as soon as the level of charge drops below around 11amps as a precaution to totally flattening the battery and causing damage to it. Some people use a solar panel charger to overcome this problem, others use EHU(Shore power) or remove the battery periodically for an overnight charge up at home The thing that sticks in my mind thats different for a boat is the need for power to keep the bilge pump running whilst its moored up for the winter. We also run a dawn till dusk 12v light to keep some power flow going through the battery to prevent any overcharging as ours is on EHU 24/7 throughout the winter lay up when no split charge power is available from cruising/towing. Julia Quote Link to comment Share on other sites More sharing options...
DaveS Posted January 3, 2010 Share Posted January 3, 2010 As my boat is out of the water for the winter, both batteries are back home in my garage, and will be given a 'top-up' charge if necessary. If lead acid batteries are left in too low a charge condition, the plates will sulphate, and knacker the battery, but then you probably knew that anyway Dave Quote Link to comment Share on other sites More sharing options...
mbird Posted January 3, 2010 Share Posted January 3, 2010 Yes, leave it on Wayne. As has been said, the charger will just provide a float to the battery to keep it topped up, ensuring your bilge pump will have power. Also, fully charged batteries are much less likely to freeze than discharged ones. Quote Link to comment Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.