SENS MicroGenius S2/S4 Technical Manual
4
NICKEL-CADMIUM batteries only, with rated capacity of 30 to 1100 Ampere hours.
Charger
certified for fire pump and emergency generator applications. For a 24 hour recharge time do not
exceed 220 Ampere hours of capacity per 12A charger output current. Do not use this battery
charger to supply power to an extra-low voltage electrical system or to charge any type of non-
rechargeable, dry cell, alkaline, lithium, nickel-metal-hydride, or sealed nickel-cadmium batteries
that are commonly used with home appliances. These batteries may burst and cause injuries to
persons and damage to property.
1.9.9.
NEVER
charge a frozen battery.
1.9.10.
The charger contains a DC output fuse for
internal
fault protection, but this will not protect the DC
wiring from fault currents available
from the battery
. Consult national and local ordinances to
determine if additional battery fault protection is necessary in your installation.
1.10.
Preparing Battery For Charge
1.10.1.
Be sure area around battery is well ventilated while battery is being charged.
1.10.2.
Ensure battery terminals are clean and properly tightened. Be careful to keep corrosion from
coming in contact with eyes.
1.10.3.
Add distilled water in each cell until battery acid reaches level specified by battery manufacturer.
Do not overfill. For a battery without removable cell caps, such as valve regulated lead acid
batteries, carefully follow manufacturer’s recharging instructions.
1.10.4.
Study all battery manufacturer specific precautions such as removing or not removing cell caps
while charging and recommended rate of charge. The recommended charge current range must
include the rated output current of the charger.
1.11.
Charger Location
1.11.1.
Locate the charger as far away from the battery as DC cables permit.
1.11.2.
Never place the charger directly above or below the battery being charged; gases from the battery
will corrode and damage charger.
1.11.3.
Never allow battery acid to drip on charger when reading electrolyte specific gravity or filling
battery.
1.11.4.
Do not operate charger in a closed-in area or restrict ventilation in any way.
1.11.5.
Do not set anything on top of the charger.
