ETS-Lindgren HI-3702, User Manual

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Series H-491198-36 Battery Charger
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Appendix B: Series H-491198-36 Battery Charger
The HI-3702 Clamp-on Induced Current Meter contains a
nickel-cadmium (NiCd) battery, and uses the Series H-491198-36
Battery Charger.
S
AFETY
P
RECAUTIONS
Before operating the Series H-491198-36 Battery
Charger, see General Safety Considerations on
page v.
I
NTRODUCTION
The Series H-491198-36 Battery Charger
is a dual power source battery charger. It
charges 3.6 Volt 1400 mAH NiCd batteries
and is powered by 120-240 VAC line power
or 12.5 VDC. The H-491198-36 charger
uses a -(dV)/(dT) negative delta
V technique to determine when the battery
is fully charged, which is typically one hour.
With this technique, the charge state of the
battery has no effect other than shortening
the charge time.
Housed in a rugged enclosure, power enters the battery charger through a power
entry module, which contains the fuses, or an optional cigarette lighter plug
adapter. The front face of the battery charger displays LEDs that provide the
operating status. The battery charger connects to the device being charged
through a short cord terminated with a power jack.
An integrated circuit within the battery charger monitors the battery voltage and
controls the charging functions according to the charge state of the battery.