Long Range WiFi

We’ve all struggled with grabbing, and holding WiFi signals while cruising outside the States.  While in the Abacos this year, Annie and I tried a new device called the Wirie.  All I can say is – It works.  We never found ourselves without a solid connection anywhere we anchored.  Here’s more info:

The Wirie is a complete wireless solution for the boat and RV, that’s easy to use, easy to install, and most importantly, greatly increases your ability to access wireless networks from the comfort of your own boat or RV!

• Simply mount The Wirie, install the included software, and plug the USB cable into your computer.

• Practical Sailor reviewed and tested, offers highest performance on the market, greatest flexibility, upgradeable, marine grade. (See the Practical Sailor review for full details).

Specific Gravity Test (Flooded batteries only)

Battery

1. Do not add water at this time.

2. Fill and drain the hydrometer 2 to 4 times before pulling out a sample.

3. There should be enough sample electrolyte in the hydrometer to completely support the float.

4. Take a reading, record it, and return the electrolyte back to the cell.

5. To check another cell, repeat the 3 steps above.

6. Check all cells in the battery.

7. Replace the vent caps and wipe off any electrolyte that might have been spilled.

8. Correct the readings to 80o F:

  • Add .004 to readings for every 10o above 80o F
  • Subtract .004 for every 10o below 80o F.

9. Compare the readings.

10. Check the state of charge using Table 1.

The readings should be at or above the factory specification of 1.277 ± .007. If any specific gravity readings register low, then follow the steps below.

1. Check and record voltage level(s).

2. Put battery(s) on a complete charge.

3. Take specific gravity readings again.

If any specific gravity readings still register low then follow the steps below.

1. Check voltage level(s).

2. Perform equalization charge. Refer to the Equalizing section for the proper procedure.

3. Take specific gravity readings again.

If any specific gravity reading still registers lower than the factory specification of 1.277 ± .007 then one or more of the following conditions may exist:

1. The battery is old and approaching the end of its life.

2. The battery was left in a state of discharge too long.

3. Electrolyte was lost due to spillage or overflow.

4. A weak or bad cell is developing.

5. Battery was watered excessively previous to testing.

Batteries in conditions 1 – 4 should be taken to a specialist for further evaluation or retired from service.

II. Open-Circuit Voltage Test
For accurate voltage readings, batteries must remain idle (no charging, no discharging) for at least 6 hrs, preferably 24 hrs.

1. Disconnect all loads from the batteries.

2. Measure the voltage using a DC voltmeter.

3. Check the state of charge with Table 1.

4. Charge the battery if it registers 0% to 70% charged.

If battery registers below the Table 1 values, the following conditions may exist:

1. The battery was left in a state of discharge too long.

2. The battery has a bad cell.

Batteries in these conditions should be taken to a specialist for further evaluation or retired from service.

TABLE 1. State of charge as related to specific gravity and
open circuit voltage

 

Percentage of Charge Specific Gravity Corrected to
80o F
Open-Circuit Voltage
6V 8V 12V 24V 36V 48V
100 1.277 6.37 8.49 12.73 25.46 38.20 50.93
90 1.258 6.31 8.41 12.62 25.24 37.85 50.47
80 1.238 6.25 8.33 12.50 25.00 37.49 49.99
70 1.217 6.19 8.25 12.37 24.74 37.12 49.49
60 1.195 6.12 8.16 12.24 24.48 36.72 48.96
50 1.172 6.05 8.07 12.10 24.20 36.31 48.41
40 1.148 5.98 7.97 11.96 23.92 35.87 47.83
30 1.124 5.91 7.88 11.81 23.63 35.44 47.26
20 1.098 5.83 7.77 11.66 23.32 34.97 46.63
10 1.073 5.75 7.67 11.51 23.02 34.52 46.03