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No Function when key set to RUN - Full Battery

We charged the Batterie for the lift last night. When finished I just checked the battery Display if it is full, all was fine. Full battery was displayed and the machien was ready to work.

Today I turn the key and no function at all anymore.
No light, no Sound, nothing happens. Not even a click from a Relais.

I checked voltage of Batterie: 49.8V idle
When I connect bat to charger, charger does not charge.


I checked with a multimeter the power in connectors without a battery connected. Result 100 kOhm with key in off Position and 200 Ohm with key in ON Position.

Any help is welcome.
Right now I wonder if the battery with load Drops voltage so that not even the electronics works. Is that possible?
  • Posted 23 Apr 2015 05:37
  • By Furetto
  • joined 23 Apr'15 - 2 messages
  • NRW, Germany
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Thanx for your help

I was wondering if the charger would start charging because of the low voltage, but I tried two charger and None of them even starts at all.

I will have to check the cells tomorrow.
  • Posted 23 Apr 2015 07:43
  • By Furetto
  • joined 23 Apr'15 - 2 messages
  • NRW, Germany
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Have you got a dead cell on the battery?

The voltage sounds low for a fully charged 48 volt battery.

A failed key switch or blown F60 fuse would stop the truck powering up but I would check the battery first.
  • Posted 23 Apr 2015 06:53
  • By Forkingabout
  • joined 31 Mar'11 - 862 messages
  • england, United Kingdom
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According to studies published in the English Journal of Medicine, the impact of daylight savings is revealed by a 24% increase in heart attacks on the Monday following the spring shift forward. When clocks move back in autumn, heart attacks drop by about 21%, suggesting that loss of sleep is an important driver.