Battery has always strived to deliver the highest quality
products to its over 1500 customers.
Stringent process controls govern all manufacturing activities.
Quality engineers are highly involved in evaluating the quality
and reliability of all products manufactured both in the design
and production stages. Our quality controls are emphasized
our manufacturing process to maximize customer satisfaction.
Our emphasis are:
- All of our engineers and technicians undergo training
course regularly, in order to make the production more efficient
- All products from raw material to finished product
are subjected to over 120 quality tests.
- All processes are based on ISO 9001 standard, implement 6Q management
- Guarantee all of the CCB batteries with 100% pass 120 quality
tests before output.
The following is a list of tests that CCB products go through
to ensure quality.
Batteries are discharged at the 0.3C rate. After 150 minutes
of continuous discharge the battery voltage under load must
be 1.75 volt/cell to pass.
HIGH LOAD TEST
A load of 2 C amps is applied for 5 minutes while the terminal
voltage is monitored. To pass, the voltage must be >11.88
volt/ per battery.
Batteries are inspected for proper appearance of battery case,
terminals, seals, markings, and the absence of electrolyte
leakage. Several samples each day are checked for compliance
with specified dimensions and tolerances.
CAPACITY TEST ĘC MEDIUM LOAD
Samples are fully charged, then discharged at ambient temperature
at the 0.2C rate to a final voltage of 1.7 volt/cell. The
discharge time must be no less then 4 hours.
CAPACITY TEST ĘC HIGH LOAD
Fully charged batteries are discharged at 77F (25C) at the
2C rate to an end voltage of 1.35V/cell. The expected discharge
time is >15 minutes.
SHELF LIFE TEST
Fully charged batteries are stored for 2 1/2 weeks at 131F
(55C). A discharge test performed at ambient temperature applying
a load of 0.2C rate to 1.7V/cell must yield a run time of
at least 3 hours, i.e. the capacity loss resulting from self-discharge
must not exceed 50%.
Sample batteries are subjected to vibration is any direction
at the rate of 2000 cycles per minute and amplitude of 0.1
inch (2.5mm) for 2 hours. No signs of damage, leakage, or
change in electrical characteristics are expected.
Fully charged batteries are overcharged at the rate of 0.1C
amps for 48 hours and then is expected to produce a run time
of 8.5 hours, or at least 95% of initial capacity, and an
absence of problem signs.
RELIEF VALVE TEST (UL924)
A fully charged battery is submerged in a tank filled with
mineral oil and charged at 0.4C amps. This overcharge is to
demonstrate the proper functioning of the safety relief valve.
The release of excess gasses through the vent is demonstrated
by bubbles rising from the battery.
CYCLE LIFE TEST
At an ambient temperature of 77F(25C) sample batteries are
discharged at the 0.2C rate to 1.7V/cell and recharged at
the 0.25 rates up to 2.5V/cell until charge current drops
0.01C amps. At least 200 cycles must be obtained before the
capacity drops below 60% of initial capacity.