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MSP-070C Battery Maintainer

4

Safety Guidelines

3.4  For flooded cell batteries, add distilled water in each cell until 

the battery acid reaches the level specified by the manufacturer. 
This helps purge excessive gas from the cells. Do not overfill. For 
a battery without caps, carefully follow the manufacturer’s re-
charging instructions 

3.5  Study all battery manufacturer’s specific precautions such as 

removing or not removing cell caps while charging and recom-
mended rates of charge.

4  Grounding & Power Cord Connections

Recommended minimum AWG* size 

for extension cords for battery chargers

AC input rating Amps

AWG* size of cord

Equal or 

greater than:

But less 

than:

Length of cord, feet (m)

25 (7.6) 50 (15.2) 100 (30.5)150 (45.6)

8

10

18

14

12

10

10

12

16

14

10

8

12

14

16

12

10

8

14

16

16

12

10

8

16

18

14

12

8

8

*American Wire Gauge

4.1 The charger must be grounded to reduce risk of electric shock. 

The charger is equipped with an electric cord having an equip-

ment grounding conductor and a grounding plug. The plug 

must be plugged into an outlet that is properly installed and 

grounded in accordance with all local codes and ordinances.

Hazardous voltage. 

An improper connection can result in 

electric shock

To avoid electrical shock or burn,  never alter 

the charger’s original AC cord and plug.  Dis-

connect plug from outlet when charger is idle.

IF THE PLUG DOES NOT FIT THE OUTLET, HAVE A PROPER 

OUTLET INSTALLED BY A QUALIFIED ELECTRICIAN.

4.2   An extension cord should not be used unless absolutely neces-

sary. Use of an improper extension cord could result in a risk of fire 

and electric shock. If an extension cord must be used, make sure:

a. that the pins on plugs of the extension cord are the same

number, size, and shape as those of the plug on the charger;

b. that the extension cord is properly wired and in good

electrical condition;

c. that the wire size is large enough for the AC ampere rating 

of charger.

5  Charger Location

Not for permanent installation: Modifying this charger for permanent 

installation in a vehicle or installing this charger in a vehicle for 

permanent use is not recommended.

In the event of fail device may generate 

and emit sparks.

Only charge rechargeable flooded maintenance-

free, low-maintenance or deep-cycle batteries.

The MCC-Series is 

NOT

 designed outside use or for wet location 

mounting. The charger must always be protected from direct contact 

with water.
5.1  The charger must be located in an area with sufficient air space to 

allow unrestricted airflow in and around the charger.

5.2  Locate the charger as far away from the battery as the charger 

cables permit.

5.3  Never place the charger directly above the battery being 

charged; gases from the battery will corrode and damage the 

charger.

5.4  Never allow battery acid to drip on the charger when taking 

gravity readings or filling a flooded cell battery.

5.5  Operate the charger only in a well-ventilated area that is free of 

dangerous vapors.

5.6  Store the charger in safe, dry location and maintain it in perfect 

condition.

5.7  Do not set the battery on top of the charger or where its acid 

might drip onto the charger.

6  DC Connection Precautions

6.1  When attaching the charger clamps, be certain to make the best 

possible mechanical as well as electrical connection. This will tend 

to prevent the clamps from slipping off the connections, avoid dan-

gerous sparking, and assure safer and more efficient charging. The 

clamps should be kept clean.

Hazardous voltage. 

Can cause death or serious 

personal injury.

Setting the switches to “OFF” does not always 

disconnect the charger electrical circuit from 

the AC power cord or the DC charger clamps.

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