Summary
Functionally speaking, 737U is a combination of 737B and 788H-USB. It is
specifically designed for battery welding (18650, 14500 and any other lithium
batteries, etc) and can be used to weld nickel strips with thickness between 0.05 and
0.2 mm for nickel plated steel or between 0.05 and 0.15 mm for pure nickel strip.
With the built-in LED light, you can even work at night.
We understand that after the
power bank
is done, the next step would be charging
and testing, which is why 737U is equipped with three USB fast charging ports whose
voltage and current are 5V and 2A.
Now let’s talk about the welding part.
1. The 737U welder can weld nickel strip with thickness under 0.2mm for nickel plated steel,
or 0.05 - 0.15 mm for pure nickel strip.
(
Attention
: The welding thickness also depends on the material of batteries’ poles, some
batteries’ poles are made of iron or iron alloy, and some are made of stainless steel,
generally, stainless steel is easier to weld than iron.)
2. The only welding method: fixed welding head.
You can build your battery pack with the fixed welding head, in this case, you need to
adjust the pressure adjustor to make the spots more reliable and elegant.