Your forklifts are workhorses, and no doubt, they’ve given you years of service. With regular maintenance, they can last for many more years. But eventually, everything comes to an end. A lead-acid battery will cease to work as well as it once did over time, even if you’re good about keeping it recharged. To help you recognize and prepare for the day when your battery has given you its all, here are four signs it’s time to replace your forklift battery.
Slowing Down
Of course, the most obvious sign that your battery is running out is lackluster performance. If the forklift seems slower and more sluggish during a job, and the various dashboard displays flicker and dim, it might simply be running out of juice. Do a basic checkup to ensure the leads haven’t disconnected, there’s no corrosion on the battery, and nothing is interfering with normal operation on a mechanical level. If a forklift appears to be in otherwise perfect shape while slowing down, it might be time to test and replace the battery.
Leaking
Look for a leak. If your battery has a crack or there’s a loose seal, the contents may start to spill out and coat the battery’s exterior and the surrounding casing. This is very dangerous, and you should address it immediately. Take out the battery while wearing protective gloves and goggles, and repair or replace it immediately. If you don’t want to deal with similar issues in the future, pick up a 48-volt lithium-ion forklift battery. Because they have high safety standards, they rarely leak and never corrode.
Losing Charge Too Quickly
Eventually, every rechargeable battery will cease to recharge. Fortunately, it’ll tip you off long before you run out of juice. If, after a proper recharging session, your battery seems to run out too quickly, it may be time to replace it. You should keep track of how long charges last on a chart showing the length of each charge and its overall service. You’ll get a feel for when your battery is on its way out.
The Nose Knows
The last of the four signs it’s time to replace your forklift battery is a funny-sounding one. Or rather a funny-smelling one. A battery about to go kaput heats up so much that the sulfuric acid inside transforms into hydrogen sulfide gas, which stinks to high heaven. Most people equate it to the smell of rotten eggs. If your battery stinks, it stinks! Get rid of it and replace it with a new and non-odorous 48-volt lithium-ion forklift battery.
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Frequently Asked Questions
How long do LiFePO4 batteries last?
A quality LiFePO4 battery can commonly deliver 4,000 or more charge cycles, often roughly 10 years or longer under the right conditions. Depth of discharge, temperature, charge settings, storage habits, and the BMS all affect the result.
How many years is 4,000 cycles?
One full cycle per day is about 11 years. Three cycles per week is more than 25 years on paper, though calendar aging becomes the limit first.
What happens at the end of a LiFePO4 battery's life?
It does not suddenly stop. It loses capacity gradually. A battery rated for 4,000 cycles may be specified to keep around 80% of its original capacity at that point.
Does temperature affect LiFePO4 battery life?
Yes. High heat speeds aging, and charging below freezing can damage cells unless the battery has low-temperature protection or self-heating.
How long does a lithium battery last in an RV?
Many years, when charging sources are configured correctly and the battery is protected from freezing charge conditions. Annual cycles are often fewer than in a daily solar system, but conditions vary more.
How should I store a lithium battery?
Store it at a partial state of charge in a clean, dry, moderate-temperature location. Disconnect parasitic loads and check it periodically per the manufacturer's guidance.
