If only the green light is on (the one farthest from the edge
of the card), it is indicating that the battery is fully charged
(above 8.6 volts). When the card is getting power from
the battery only, this light will stay on for a very short
time. However, the battery will continue to backup the
RamKeeper for several hours. (See the chart below.)
As soon as power is restored to the Transformer, it begins
charging the battery again and the green light will come on.
Light on
8.6
Volts Light off but still
maintaining RK
5.2
Loss of RK info
Time
Time/Voltage chart
When both the red and green lights are on the
RamKeeper is being powered by the wall transformer and
the battery is being either charged, maintained or is not
connected.
If only the red light is on the battery is either dead or not
connected properly.
Battery
The battery is a sealed Gel/Cell rechargeable battery rated
at 8 volts and 3.0 AMP. HR. The capacity of the battery can
be increased by adding cells in parallel for longer battery
backup time.
Additional batteries are available from Applied
Engineering. Each battery carries a one year warranty but
with normal use, these batteries should Last about 5 years.
Transformer
The wall Transformer is an unregulated 9.5VDC at lA
supply with a coaxial round connector on one end that
plugs into the RamKeeper. The connectors outside
contact is positive and the internal contact is ground.
* Warning: Do not use other transformers. The
wrong transformer could seriously damage your
RamKeeper.
34 RamKeeper
