How to Charge Deep Cycle Batteries

Deep cycle batteries are specifically designed to be able to transmit a constant and steady electrical charge. Deep cycle batteries are often found in low power vehicles, such as golf carts. Just as deep cycle batteries function differently from more common forms of batteries, the way that deep cycle batteries recharge is also unique. Knowing how to charge deep cycle batteries is important to know, especially for those who operate vehicles and other devices that utilize these batteries.

Things You'll Need

• Protective eye wear Fan Regulated, deep-cycle charger

Instructions

1. Understand the three stages of deep cycle charging. The first stage is called the "bulk charge." During this stage, deep cycle batteries are charged until they are approximately 90 percent charged. As more electricity is channeled to the battery, the battery enters the absorption stage in which the charging current slowly decreases. The final stage is called the "float stage." During this stage, the deep cycle charger maintains the battery's state by sending a very low level of electricity to the battery cells.

2. Turn off the device or vehicle connected to the deep cycle battery.

3. Disconnect the deep cycle battery. Remove the vent caps and check the battery's electrolyte levels (follow the instructions in the battery manual as testing methods may differ depending on the battery manufacturer).

4. Replace the vent caps.

5. Wear protective eye wear and move the battery to a well ventilated, open area. The recharge process can release fumes which, if concentrated in a small area, can be toxic.

6. Connect the deep cycle battery to a deep cycle recharger. The recharger should be turned off prior to being connected to the battery. Follow the battery charger's instructions as different chargers work differently. The process may take up to 20 hours to recharge.

Tips & Warnings

• Run a fan in the room in which you are charging the deep cycle battery, in order to ventilate the area and clear toxic fumes.

• Never disconnect a deep cycle battery from a vehicle or device while it's running; doing so will send high pulses of electricity into the vehicle/device and damage the internal electronics. Do not adjust the charger's clamps while recharging the battery because this may create a fire hazard.