One of the most common lithium batteries is the 18650, which is called that
because they measure 18mm wide and
65mm long (or slightly longer). These
are used in everything from power tools
to laptops to the Tesla Model S (which
uses some 7000 of them per car!).
This is an example of a simple charger.
It is the same type that might power a
laptop or some other device. It’s finished
with a proprietary plug. Whoever put the
key for the battery lock on this charger
was smart; it’s a great idea.
Each connector is different. Some are simple, off-the shelf, standard connectors like
the one on the far left. The second one is a
custom take on the audio-industry-standard
XLR plug. The two on the right are more specific; the far right being a custom-branded
plug with the company logo.
Every different bike or battery pack has its own specific charger.
You don’t want to mix these up, because improper charging can,
at best, shorten your battery life. At worst, it can cause a fire.
Some companies buy their chargers in bulk from China and just
specify the type of connector. Other companies carefully label
their chargers with their brand so there is no confusion.
5 TIPS TO REMEMBER:
• Always charge your battery after a ride
• When storing it, charge it once a month
• Keep the storage temperature moderate
• Avoid humidity
• When in doubt, visit your bike shop