You should be cautious of how you charge the units. When it comes to the chargers, go for high-quality chargers that won’t overcharge the units. For a great experience, work with high-quality smart chargers. You should regularly check the charging of the batteries to avoid charging them beyond the rated capacity. Some people make the mistake of leaving the batteries in the chargers for more than 24 hours. This shouldn’t be you.
In the bid of maintaining the units in great shape, you should avoid using ultra-fast chargers. Keep off chargers offering 1-hour charge. In most cases, the fast chargers charge the batteries up to 70%. They don’t charge it up to 100%.