Maximizing Jumbo System Battery Life
The batteries used in the LINAK Jumbo system are sealed lead–acid gel cells requiring no user maintenance (other than regular charging). When new a Jumbo battery pack has a nominal voltage of 24V, and a capacity of 2.9Ah. With use, both these values will decrease, resulting in fewer lifts on each charge. Some simple precautions, though, can dramatically improve the life of the batteries.
Unlike nickel–cadmium rechargeable batteries the lead–acid cells used in the Jumbo system should never be fully discharged. In fact deeply discharging these batteries will significantly decrease their useful life. The following graph illustrates the lives of three batteries. The first, battery A, is completely emptied every cycle. The second, B, is discharged to half full every cycle, and battery C is discharged by only 30% between each cycle.
As can be seen from the figure, after roughly 180 cycles battery A, which was discharged to empty every cycle, is not able to maintain any charge. Batteries B and C, however are still able to retain close to 100% of the capacity of a new battery. After 400 cycles battery B is dead, but battery C still retains 95% of the capacity it had when new, and it does not become unusable until after nearly 1200 cycles.
In order to increase the longevity of your Jumbo batteries it is recommended that you take the following steps:
Jumbo System Battery Charger Diagnostics – Charger Reference
Jumbo System Battery Charger Diagnostics – Charge Profile
The following figure illustrates the charge for a very empty battery, showing the three distinct stages of a typical charge.
Jumbo System Battery Charger Diagnostics – Testing the Charger
If you suspect that the charger is not functioning correctly perform the following tests:
If the charger fails either of these tests it is faulty and should be replaced.
Jumbo System Battery Charger Diagnostics – Testing the Battery
Unfortunately the capacity of any battery does diminish with use. The following tests can help determine whether a battery has reached the end of its useful life.
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