All batteries are almost identical except for this slight variation of millimeters that sets them apart as button top and flat top batteries. A button top battery is hard to fit, while a flat top fits perfectly, leaving no space at all. This best-fit match makes button top batteries favorable in most electronic devices. Like most batteries, these are also rechargeable and reusable. However, its recharged capacity depends totally on the type of charger you use for charging your flat top battery.
There are various flat top battery adaptors in the market, all varying in some features of power input-output. Most chargers come in two sizes, 7.4v or 10v. The smaller size is usually for smaller sized batteries (120, 150) while the larger size is for larger sized batteries like 14500, 18650, 26650 etc. But to get the most from your flat top battery, it is important to charge it with the best flat top battery adaptor.
A suitable adaptor will reduce the charging time while providing a sufficient power supply to increase your battery life. Using a poor quality adaptor may lead to internal damage and reduced battery power output.
A damaged battery may also damage your device in so many ways. Therefore it is essential to have some handful of knowledge about the key features to look for while looking for the best flat top charger.