Davehutch-hutchs 0 Posted August 11, 2013 when a 12v battery is fully charged what volts should it read ? and how long should it hold that reading with out dropping?its my leisure battery on my caravan Share this post Link to post Share on other sites
Skelly 0 Posted August 11, 2013 Around 12.7, just checked mine and its 12.85 and I haven't used the bike for week Share this post Link to post Share on other sites
Davehutch-hutchs 0 Posted August 11, 2013 cheers Alan Share this post Link to post Share on other sites
Davehutch-hutchs 0 Posted August 11, 2013 just found this too /t7912-battery-keeps-going-flat#103738 Share this post Link to post Share on other sites
Neill 0 Posted August 11, 2013 This might give you a clue Davehttp://www.energymatters.com.au/renewable-energy/batteries/battery-voltage-discharge.phpI know its for solar energy batteries but the chart will apply to most batteries Share this post Link to post Share on other sites
stantheman 0 Posted August 11, 2013 why do you need a leisure battery anyway dave ;thought you went to sites with hook up leccy Share this post Link to post Share on other sites
Davehutch-hutchs 0 Posted August 11, 2013 @stantheman wrote:whyo you need a leisure battery dave ;thought you went to sites with hook up leccy your right stan , but lights ,water pump , toilet flush, things like that still run off 12volt Share this post Link to post Share on other sites
Davehutch-hutchs 0 Posted August 11, 2013 charged the battery up and it is still holding 12.8 volt , if it still is in the morning I will think it is ok Share this post Link to post Share on other sites
Davehutch-hutchs 0 Posted August 12, 2013 battery is still reading 12.7v this morning , so I take it it is ok Share this post Link to post Share on other sites
Davehutch-hutchs 0 Posted August 12, 2013 how long holding a charge of 12.7 v would say it would be safe to say the battery is in good health ? it has now for the best part of 24 hours Share this post Link to post Share on other sites
Neill 0 Posted August 12, 2013 is it lead,acid Dave and is it sealed for life or can you top up with distilled water? Share this post Link to post Share on other sites
Davehutch-hutchs 0 Posted August 12, 2013 @Neill wrote:is it lead,acid Dave and is it sealed for life or can you top up with distilled water?lead acid and you can top it up Share this post Link to post Share on other sites
Neill 0 Posted August 12, 2013 get a hydrometer that will tell you state of charge in each cell.better way to check it, each cell should read the same if one differs then it isn't holding charge so well and battery is coming to end of useful life http://www.halfords.com/webapp/wcs/stores/servlet/product_storeId_10001_catalogId_10151_productId_530647_langId_-1_categoryId_255205one caveat... don't test just after adding distilled water, it will read wrong, wait until its had a charge cycle Share this post Link to post Share on other sites
Davehutch-hutchs 0 Posted August 12, 2013 Thanks m8 Share this post Link to post Share on other sites
