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Testing for a Short or Open Cell continued

Example: If a 6 volt battery is reading below 4.3 volts it has a short cell .

Step 4: Testing for an Open Cell in a Flooded/Wet cell battery

-If you have the sealed type batteries, this test method cannot be used.

-Use a temperature compensating battery hydrometer for this test.

a.) With the hydrometer, measure and record the specific gravity

of each battery cell. ( Example: Battery #1— Cell 1= 1.250, Cell 2=1.275,

Cell 3= 1.275). Fill & drain the hydrometer a few times before pulling a

sample.

b.) Compare the specific gravity readings between each bat-

tery. If a battery has a difference of more than .05 between the cells,

that battery has an open cell.

Example readings: Three 6 volt batteries

Cell #1

Battery A

1.250

Battery B

1.275

Battery C

1.200

Battery C has an Open Cell because the difference between Cell #1 and

Cell #3 is .075, more than .05.

Any battery that has a Short or Open Cell needs to be replaced. If you

have been using the BLS or plan on using the BLS you only need to re-

place the bad battery with another used or new battery. Now you are

ready to start using the BLS... .

1. If your hydrometer is not temperature compensating, add .004 to

readings for every 10 F above 80 F and subtract .004 to readings for

every 10 F below 80 F.

Cell #2

Cell #3

Condition

1.225

1.250

Recoverable

1.250

1.225

Recoverable

1.250

1.275

Open Cell

Attention: If you are installing the BLS on a used or older batteries, please

review the previous two pages: "Testing a for a Short or Open Cell."

Installation:

1) Identify the First and Last battery in the system, in other words, in parallel

with the charging source. The First battery's positive terminal is con-

nected to the positive lead from the battery charger (or controller). The

Last battery's negative terminal is connected to the negative lead from

the battery charger (or controller).

2) Connect the red wire from the BLS to the positive terminal of the First

battery. Connect the red/black wire from the BLS to the negative termi-

nal of the Last battery. Securely fasten the terminals to the battery post.

Using the BLS: The BLS is constantly working. It draws a small amount of cur-

rent (250mA) from the batteries to operate. Ideally, the BLS should be left

connected at all times during normal operation. When installing the BLS on

solar or wind battery banks, simply attach the BLS directly to the batteries

and use the system as normal. If the batteries are not installed in a system,

follow the instructions on page 8 of this manual.

MOUNTING

The BLS can be mounted permanently by using two number 8 screws and

nuts, self tapping screws, or tie wraps. It is best to attach the BLS to some-

thing metallic to help dissipate the heat. If possible, mount it with the fins

vertical to in-sure good cooling. The BLS is weatherproof.

BATTERY STORAGE

When batteries are to be stored for extended periods, use BLS with a trickle

charger to maintain the battery or batteries in good condition. If you are

not going use a trickle charger, disconnect or turn off the BLS while the bat-

teries are stored. When possible, charge the batteries once per month with

BLS attached for 24 hours. It is very important not to let the battery sit for an

extended period without a charge and the BLS attached, because lead

sulfate will build up.

Installing the BLS