Lawnmower battery service advice Naturally, when your 896 NUMAX PREMIUM CXT lawnmower batteries arrive,. Hence, they are kept in storage.So they lose charge at about 5% of their capacity per month.Therefore, stored batteries should be kept in a cool place. As a result, the warmer it gets, the more the battery will self-discharge.Thus, this is the main reason why lawn mowers and leisure batteries exist.Hence, they stood over the winter months. So they are best kept on a trickle charge. Nowadays, you can buy cheap smart chargers.As a result, that will top up the charge of your battery over the dormant winter period.This will give you a longer life for your battery. 896 NUMAX PREMIUM CXT lawnmower batteries.This is one of the reasons that our battery sales increase just after the winter period. The plates used contain lead-calcium and lead-strontium.This helps the battery reduce any liquid loss, and it can be sealed. Our Lucas premium batteries are a proven top-class product.Lastly, we have sold these batteries for the past 10 years with great success.