READ THIS FIRST!
Before installing the BM-1 Compact,
CAREFULLY READ THE FOLLOWING INSTRUCTIONS,
ESPECIALLY THE SAFETY NOTES AND WARRANTY CONDITIONS.
INTRODUCTION
The NASA BM-1
Compact
is supplied complete with display unit,
current shunt (standard 50mV), and connecting cables. It is
intended for operation on 12V Lead-Acid batteries with capacities
between 5 and 600 Ampere-hours (Ah). Its own current consumption
is less than 1.5mA, which is about 1 Ah per month, less than the self-
discharge rate of most Lead-Acid batteries.
The NASA BM-1
Compact
monitors the battery voltage, the current
into and out of the battery, and predicts the time to achieve full charge
(during charging) or the time to full discharge (during discharging).
A visual indication of the state of the battery charge is always available,
and an alarm is used as an alert when the battery voltage falls to a
preset level.
INSTALLING THE DISPLAY
Safety notes - IMPORTANT
Lead-acid batteries can emit hydrogen when in operation. Hydrogen
and air forms a potentially explosive mixture. Accordingly, ensure that
the area around the batteries is well-ventilated, and douse all naked
flames and prevent sparks. Short-circuiting a battery with a metal tool
or piece of jewellery can cause catastrophic currents to flow. Before
installing any of the BM-1 Compact units, remove all jewellery (such
as rings or metal necklaces). Ensure that no metal tool can cause a
short circuit. If you are not sufficiently skilled to undertake any part of
this installation safely, you must seek the assistance of a suitably
qualified person.
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