Initial Charge
Connect the positive terminal (long strap) of one cell to the negative terminal (short strap) of the adjacent cell and continue this procedure until all the cells are connected together. This will leave one positive and one negative terminal to be connected respectively to the positive and negative wires from the charging source.
The bends in the top terminal connectors should be made about one inch above the pillar posts to eliminate the danger of breakage at the post.
In tightening the bolts, do not use excessive force, as there is liability of stripping the threads.
After the cells have stood for 12 hours with electrolyte in the jars, they should be put on charge at the following rates:
| Type | Amperes |
|---|---|
| PH-7 | 4 |
| PH-9 | 5 |
| PH-11 | 6-1/4 |
| PH-13 | 7-1/2 |
| PH-15 | 9 |
| PH-17 | 10 |
They should be left on charge continuously until the specific gravity of the electrolyte reaches a maximum and remains constant for six hours. At this point, each cell should be gassing freely and the voltage should read about 2.45 volts per cell, with the above current flowing.
Under normal conditions it will require approximately 80 hours to complete the initial charge. The final gravity will be approximately 1.250. If the gravity is above this value, remove a little electrolyte and add the same amount of distilled water.
If the gravity is too low, remove a little of the electrolyte and add the same amount of 1.400 specific gravity acid and leave on charge as before.
After either water or acid has been added, charge the cells three hours longer in order to thoroughly mix the solution, and if at the end of that time the gravity is between 1.245 and 1.255, the cells are ready for service.
It is very important that the initial charge be continued until the specific gravity reaches a maximum value, regardless of the length of time required. The battery must not be discharged until the initial charge has been completed.
If it is impossible to charge the battery continuously, the charge can be stopped over night, but must be resumed the next day.
It is preferable to charge the battery at the ampere rate given above, but if this cannot be done, the temperature must be carefully watched so that it does not exceed 110° F.