<p>1. You should stop using the battery as soon as you feel a noticeable decrease in power or performance, You should never completely discharge a battery as this is widely known to cause permanent damage to Ni-Cd, Ni-Mh &amp; Li-ion battery products.<br/>2. Ambient &amp; battery temperature should be closely monitored by the user, if batteries are too hot or too cold they will not take a full charge. If the user attempts to charge batteries outside the recommended 5&deg; - 40&deg; range a shortened battery life and greatly reduced runtime could be experienced. Most new chargers will not charge the battery until it reaches acceptable temperatures. Some new chargers like the Hitachi UC18YRL actually have a built in cooling fan which will allow cool air to flow through the batteries during the charging process, this will provide a constant temperature to the battery therefore ensuring longevity is maintained at an optimum level. It is considered best practice not to leave your batteries in direct hot sunlight or to leave your batteries in small thin toolboxes in extreme cold, in both instances the sheer extremities faced by the batteries can cause permanent damage. All suppliers also consider it good practice to let your cordless tool batteries sit for 2 hours after use before attempting to recharge them.<br />3. If you feel as though your battery is not performing as well as it should the following tip could help, this is of coarse providing there has not been any permanent damage to the battery or it&rsquo;s cells previously. Discharge the battery under normal use only, let the battery sit for two hours at room temperature, charge the battery overnight or for at least 10 hours. If run time is not improved try the process again, if you notice no improvement in its performance the battery could have permanent damage or it may have reached the end of its useable life and may need to be replaced.<br />4. With the new technology of batteries and chargers supplied by Gasweld Discount Tool Centres that are produced by reputable brands such as DeWalt, Makita, Milwaukee, Panasonic, Hitachi &amp; Bosch you may leave your battery in your charger while it is plugged in for any amount of time.<br />5. It is considered good practice NOT to charge your cordless batteries off generators, DeWalt actually publish that their chargers are safe to run off portable power generators. You should always check with the manufacturer or their representative as to whether your particular charger can run off portable generators. Because the electronics in battery chargers are so sensitive when you connect them to generators they will usually cause a failure in the circuit board or they will simply not pick up the power. For users of a good quality Inverter Generator like the Yamaha machines you will find in your local Gasweld Tool Centre you can freely disregard the above information.<br />6. When transporting cordless tool batteries the user should always fit the batteries to a tool or securely locate them in their moulded places in the carry case that comes with the tool. This is because the batteries electrical contact terminals are located on the extremities of the battery and these contacts / terminals can rub on other conductive equipment and cause sparks, battery damage, fire or on rare occasions even explosion. Most of our suppliers also provide caps to protect the contact points on batteries. It is a good habit to refit these caps when the batteries are not in a tool or charger.<br />7. Lithium Ion battery owners should continually check and clean the contact terminals of their batteries &amp; also the corresponding terminals in their tools and chargers. Most of the new Lithium products available on the market today have 2 or 3 large terminals on their batteries but they also have a series of smaller contacts which run systems like temperature sensors, over/under charge protection or overload protection systems. A good way to clean these is with a good quality very fine paintbrush, a simple wipe of the terminal is usually all that is required to keep these in good service. For owners of Ni-Cd or Ni-Mh batteries you should regularly clean you battery, Drill &amp; Charger terminals as per the above information as well. <br />8. Owners of Ni-Cd &amp; Ni-Mh batteries will experience drain down of their batteries when they sit outside of the charger, as far as we are aware the only supplier that publishes information on this is DeWalt, according to the DeWalt Battery Care &amp; Maintenance guide owners of these types of batteries will experience their batteries naturally discharging between 15-20% of the batteries capacity in the first 24 hours, 7-10% the next day and about 1% every day there after. Although we have not independently tested this information we believe it to be reasonably accurate