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Why does by century battery charge go from charging to cutting off. meter also goes from fully charged to charging

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There are several causes of such, but the most likely is that one of the batteries is not able to charge in the series. If both batteries are good but one has gotten so low it can't regain it's charge while in the series, you can disconnect the batteries, and charge each one individually, on a 12 volt battery charger, and this will correct this issue, for a time. If one of the batteries has failed, and can not hold a charge, it will have to be replaced.

Posted on Nov 29, 2014

  • bluelight969 Nov 29, 2014

    There are several causes of such, but the most likely is that one of the batteries is not able to charge in the series.

    If both batteries are good but one has gotten so low it can't regain it's charge while in the series, you can disconnect the batteries, and charge each one individually, on a 12 volt battery charger, and this will correct this issue, for a time.

    If one of the batteries has failed, and can not hold a charge, it will have to be replaced. DB

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SOURCE: battery wont charge

The batteries are probably worn. Age, failure to completely charge, frequent discharging to below 50% of charge, completely discharging, and heavy use all contribute to wearing out a battery. The most common symptom is the one that you have; the battery will not completely charge.

Posted on Nov 10, 2008

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SOURCE: only 1 battery charges

The lights are working, the batteries aren't. Red indicates power to the charger, and it should be on all the time. Green indicates a full charge, usually. If one or both of the batteries are totally dead, then the charger can't "see" them, and you will get a green light, but you will have dead batteries.

All power chairs use sealed, deep-cycle batteries. Deep cycle batteries, are designed for slow amperage dischare over a long time period, unlike a car battery that throws out a lot of amperage for turning the motor over. That's called "cold-cranking amps", and you can load-test a car battery to see if it will throw out a ton of amps for long enough to start a car. There is NO load tester made, or possible for a deep-cycle battery. A load test requires a 24-hour time period, and a complicated formula.

So, your course is to get some fresh, gel-sealed-batteries. You will need type U-1. Specify, gel-sealed-batteries when you go to the battery shop. A fresh set should get the chair up to about 12-16 mile range, which would be about 3-4 hours running constantly at high speed. Good luck.

Posted on Jul 09, 2009

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SOURCE: Batteries won't charge w/ on board charging unit.

Since you have replaced the batteries and the charger there is most likely a problem with the wiring.

Posted on Nov 10, 2009

supertech6
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SOURCE: new batteries does not seem to fully charge.

The measurements below are for a 12 volt charger or across one battery at a time. In a 24 volt charger or across both batteries at once, double the values.
The charger will not show any output unless connected to a battery. To test the charger, attach the charger to the battery but do not plug in the charger. Connect a meter to the battery and read the voltage (9.8v - 11.6v).
Now plug in the charger. Read the battery again (13.6 - 14.2v).
The voltage must not be higher than 14.8 on the battery or the battery will over-charge - the charger needs service. If the voltage does not come up to 13.2v, the charger is not running. Again, the charger needs service.
Be patient. You can wait ten minutes and measure again. Batteries respond slowly to the charger.

Posted on Apr 02, 2010

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SOURCE: Jassy 1103, will not start charging the battery.\r...

the 1103 uses an onboard charger. Charger's life span is about 3 years; some fail in 6 months, some in 6 years keep in mind. You can charge the 1103 using an offboard charger which are available for about $50.00 on Ebay. Search for electric wheelchair charger. You want one that has a 4 to 6 amp rating.

The offboard charger has a 3-prong connector on one end and the other plugs into a grounded wall outlet. Plug the charger into an outlet and the three prong connector into the female three prong connector located at the bottom front of the joystick. Give it a good overnight charge and it should be back up to snuff in the morning.

Posted on May 23, 2010

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This is an easy check if you have a cheap, simple volt meter. It's much better to have an old fashioned needle meter rather than a digital. The needle is more sensitive, much quicker, and makes a clearer diagnostic tool. But not to worry, for you fancy folks a digital still works (sometimes the results are not as clear).
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On my unit the guage does not seem to move upward as the battery charges or is the line to the far left indicate a fully charged battery


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amy why did you not keep the batteries charged? even new batteries have to be charged before use. Now plug in the charger and look at the meter with the charger plugged in the meter will show some reading around 4-5 amps. Let the charger work overnight when you get up in the morning fully charged the meter will read zero. Turn on the chair and all the battery lights should be lit. If after charging over night you are still getting one red light then you blew 170.00 and no amount of charging will bring them back. Sorry I wish I had better news. If you replace the batteries charge fully before use and then use the chair some each day and charge nightly for 20 days this will break in the batteries and get them operating at 100%. If you then only use the chair sometimes always put it up fully charged and charge at least once a week If you use the chair for that day charge overnight and it will be ready to use again when you need it. If you are going to leave the chair unattended for 6 months then fully charge the batteries and disconect them from the chair until you need it again New batteries every 6 months can get expensive Hope this helps you

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The easiest and best way to test any battery is with a volt-meter.

http://www.northerntool.com/shop/tools/product_12496_12496

The link above is for a multi-meter. These are inexpensive and are an extremely useful tool to have. For about $15-20 you can buy a meter which will test AC/DV voltage, resistance/continuity and often diodes and/or transistors as well.

A fully-charged 12v battery will give a reading of 12v (or very close to 12v) on a volt-meter when it is fully-charged. 6v batteries should read 6v, 1.5v batteries should read 1.5v, etc, etc.

If the reading is lower than the power output of the battery, the battery is either not fully-charged or one or more cells may be damaged. If cells are damaged, you will never get the full 12v output from a 12v battery.

There are other ways to test batteries but they are less accurate. It's possible to use a battery charger, but you can only use this to determine whether a battery is fully-charged if the battery is known to be good. A fully-charged battery should draw 0 amps on a battery charger, but a damaged battery may also draw 0 amps so this is not a good test.

Basically, I'd suggest you get yourself a multi-meter. You be glad you did!

Hope this helps. Please let me know if you need further assistance.

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