We here at BestBatteryTips.com get asked this question numerous times. Can I replace only one or two batteries in my electric golf cart? Well you can, but do the manufacturers or ourselves recommend this? The answer is NO. We have people tell us all the time that their batteries are only 4 years old, and only 2 of them are testing bad. Why can’t I just replace them, and I will be good to go? The other batteries have 4 years of use and are a long way from factory new batteries. As a result of charging and discharging, their ability to hold a solid charge is not there. Ever heard the saying you are only as strong as your weakest link? This couldn’t be more true in the golf cart world.
We understand why people try to change only 1 or 2 batteries, because golf cart batteries aren’t cheap. In the long run you are actually spending more money by trying to save money if that makes sense. The life expectancy of golf cart batteries is generally 5 years. Now it has been said that Trojans can last up to 7 years, but from what we have seen 5 years or less seems to be the norm. Especially on golf courses where the batteries are ran through the gauntlet of charge and discharge cycles. We have heard, and seen to many times where putting 1 new battery in a golf cart leads to a melt down of battery connections, cables, and even exploding a battery. How does this happen you ask? You are only as strong as your weakest battery. The current traveling through the cables and batteries will find the weakest spot, and this is how melt down of items happens. The reason meltdowns happen is because it gets hot in that area. The new battery that was installed will become the same as the old batteries due to the heavy draw from the old batteries. Old batteries do not become refreshed by putting new batteries in the cart. The old batteries will draw off the new batteries until they become equal with the old, its that simple.
We are sorry to say but when its time to open your wallet, its time to open your wallet.
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