Why Can T You Mix Old And New Batteries. Dont even mix new batteries of different makes or ages because they will contain different amounts of charge. And like a chain the whole pack will only be as strong as its weakest link limiting performance to that of the tiredest cell.
And like a chain the whole pack will only be as strong as its weakest link limiting performance to that of the tiredest cell. It also forces the weaker battery to essentially act as a resistance which can make it overheat. Mixing batteries with different charge levels can dramatically decrease battery life.
Joules law dictates that thermal energy gain accompanies loss of electrical energy.
It also forces the weaker battery to essentially act as a resistance which can make it overheat. The new batteries run out sooner while the old battery overheats. Experts advise golf cart owners to replace all batteries if more than one is dead. Most golf carts use between four and six batteries each of which is required for operation of the cart.
