There are many plugs to choose from in the RC world. These are dependent on power handling requirements, resistance, and own personal preference. Using one type and is the easiest way to swap different batteries from various applications and ease of charging.
The most common are:
JST
Connector
This is a small power plug rated for up to 5 amps of continuous load. It is
used on smaller battery packs for powering receivers
of nitro / gas RC applications, small park fliers, and micro electric helis.
Deans
Ultra Connectors
These are a very popular connector type (also called "T" connectors)
on electric RC cars. This is a high quality low resistance plug. They are rated
for up to 50 amps of continuous load.
EC3
Connectors
EC3's are becoming very popular as they use true "bullet
style" connection pins and are rated for up to 60 amps of continuous load.
Most will agree bullet pins make for the best possible connection when dealing
with high current applications due to a larger surface contact area. Common for
Losi vehicles.
EC5
Connectors
These are a longer version of the EC3 and because the bullet pins
are longer (5mm) they have an even greater surface area for contact. EC5's are
rated for up to 120 amps of continuous load. Another common on larger scale
Losi vehicles.
HexTronik
XT-60 Connectors
XT-60 connectors are popular in plane and heliapplications. Like
the EC3 connectors they use gold plated bullet pins and have a slightly higher
65 amp current rating.
Tamiya Connectors
These are lower amperage connectors once very popular, especially with the
electric RC car, truck, and boat crowd, but since high amp LiPo's have entered
the scene, Tamiya plugs are used less and less. You still will find them used
for powering smaller models and some types of nitro starting systems.
Traxxas
Connectors
As the name suggests, Traxxas battery connectors are used exclusively on
electric Traxxas RC vehicles/boats but can be fit to any high current
application up to about 100 amps. These are a good connectors are are greatly
growing in popularity.
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