Great Planes Triton Jr. Charger - GPMM3152 - Manual (Page 10)

5. When peak charge is finished, the screen above will show
“END” and tones will sound for 10 seconds. The charger will
automatically go to trickle charge at this time (see the section
at right for details), but the battery should now be ready for use.
Other data measured during charge can be viewed in the DATA
VIEW screens by pressing and holding BATT TYPE for two
seconds, as shown on page 20.
NiMH CHG 02492
10.08V 1.4A 107m
Battery
Type
CHG =
charging
Output
Voltage
Charge
Current
Charge capacity: This is how much capacity
(energy, in "mAh") has been delivered to the
pack during charge. For a battery which
previously had some charge, this number
could be low. For a battery which previously
had little or no charge, this number should
be higher (ideally within 10% of the battery's
own mAh rating).
Elapsed charge time: This is the number of
minutes the battery has been on charge. For
a battery which previously had some charge,
this number could be low. For a battery
which previously had little charge, this
number should be larger.
10
NOTES FOR CHARGING NiCd & NiMH BATTERIES
• A battery which is approaching- or has reached full charge should become
warm to the touch, but never get HOT. If overheated, the battery has likely
reached an overcharge condition and should be disconnected from the
charger immediately!! Allow the battery to cool before use.
• Lower current means it takes longer to charge, but it’s less stressful on the
batteries, tends to result in more fully charged batteries, and helps to
maximize the battery’s lifespan.
• Larger “sub-C” size cells can handle peak charge currents up to 5.0 amps
with little heat generation. Smaller “A” and “AA” cells overheat more easily
and should be charged at much lower currents. Even smaller “AAA” and
“N” cells should be charged at lower rates. Refer to the table above for
recommended charge currents.
• For packs having more than 8 cells, the actual amount of current delivered
to the battery might be limited due to the charger’s maximum rated output
power. This is normal.
• To keep NiCd batteries in good operating condition, it’s a good idea to
properly discharge them before charging on a regular basis.
• NiMH batteries have a self-discharge rate of about 20-25% (vs. 15% for
NiCd). Always recharge NiMH batteries just prior to use.
• The “deltaV” peak detection method is used to charge NiCd and NiMH
batteries up to 95-98% full charge. A trickle charge current will
automatically be delivered to the battery after peak charge ends. This
trickle charge is designed to help the battery safely reach 100% full
charge. Trickle charge is applied
only after an individual peak charge (not
after discharge or cycle), and will remain on until the pack is disconnected.
The trickle current value is fixed at a rate being the regular charge current
setting divided by 20. A fast charge current of 1.0A will result in a trickle
current setting of (1000mA / 20) 50mA. A fast charge current of 600mA
will result in a trickle current of (600 / 20) 30mA, etc.
• Charge can be stopped manually by pressing ENTER, or disconnecting
the pack.
• A backup safety timer will also stop charge if not completed after 1.5 hours.
This timer can be shut off in the DATA VIEW MENU. See page 20.
WARNING! It is normal for NiCd and NiMH batteries to become warm during charge. Disconnect batteries IMMEDIATELY if they
become hot at any time! If batteries become overheated, it may be necessary to use a lower charge current in the future. Never
attempt to charge batteries at excessive rates, as permanent damage could result.