Green Digital Power-tech G100-24N User manual

CAUTION
1. SAVE THIS INSTRUCTIONS- This manual contains important safety and
operating instructions for the G100-XXN battery charger.
Please read the caution ofbatteries or devices you want to charge firstly!
2. When charging, batteries can emit explosive gases, therefore it is essential to
prevent flames and sparks. The charger is designed for charging specified
NIMH/NICD batteries. Do notuse for any other purpose.
3. Always provide good ventilation when charging.
4. Use of an attachment not recommended or sold by Green-Digital Power-tech
may result in a risk of fire, electric shock or serious injury to persons.
5. To reduce risk of damage to electric plug and cord, pull by the plug rather than
by the cord when disconnecting charger.
6. An extension cord should not be used unless absolutely necessary. Use of an
improper extension cord could result in a risk of fire and electric shock. If
extension cord must be used, make sure that: a) Pins on plug of extension
cord are the same number, size and shape as those of plug on charger; b)
Extension cord is properly wired and in good electrical condition; and c) Wire
size is large enough for ac ampere rating as specified in “technical data”.
7. Do not operate charger with a damaged cord or plug-return the charger to the
place where purchased.
8. Never operate the charger if it has received a sharp blow, been dropped or
otherwise damaged in any way; take is to a qualified serviceman.
9. Do not disassemble the charger; take it to a qualified serviceman when
service or repair is required. Incorrect reassembly may result in a risk of
electrical shock or fire.
10. To reduce risk of electric shock, unplug charger from AC outlet before
attempting any maintenance or cleaning. Turning off controls will not reduce
the risk.
G100-XXN 24V~36V NIMH/NICD Battery Charger
User’s Manual
May, 2011 2rd Version
Green Digital Power-tech Co., Ltd.

Brief Introduction
G100-XXN is a main member of digital-chargers from Green Digital
Power-tech Co., Ltd. It represents today’s new technology for 24V(20s) ~
36V(30s) NIMH/NICD battery pack charging. G100-XXN programmed 3 auto
stages ( Ip-Im-It) charging process，It is designed for 20s(24V) ~ 30s(36V)
4~25Ah NIMH/NICD battery pack. Stage “Ip” is a pre-charge function for
deep discharged battery pack, this is helpful for battery’s cycle life. When the
battery recovered by pre-charge small current, stage “Im” will give bulk current
charging. This is the main charge stage, when the battery nearly charged full ,
-dV phenomenon will be detected by the MCU in charger (-dV value is
3~6mV/per cell about) . Then the battery will leave bulk stage and cut-off
output or enter a defined trickle pulse charge stage “It” to maintain battery.
Further, G100 can display the charging process, indicate the battery
capacity from 25% to 100% timely. This is helpful for user.
For more safety, G100 will inter protection mode when the battery polarity
reversed our the output connectors shorted.
Specification for G100-XXN
Input Voltage 100-240VAC，50-60Hz
Input Current 1.6A
Back current drain <1mA
G100-24N G100-36NCharge voltage limit
32V+-1% 48V+-1%
Bulk charge current 2.8A+-5% 1.8A+-5%
Cutoff condition -dV>=5mV/cell or dT/dt>=0.6℃/per minute or Temperature of
battery pack>=50℃or Timer out or Peak-voltage trigger
Operate Temperature
-20℃~50℃
Cooling Natural convection. Do not cover the charger.
Charge principle Auto 3 stages: Ip-Im-It
Battery type NIMH/NICD 24V~36V(20S~30S)
Battery capacity 3-25Ah
Size 170X70X51mm
Enclosure IP54 (
Dust
protected
,
Water splashing
resistance)
Weight 400g
Display Panel
How to use:
1. Connect theAC cord tothe socket, The “power” lamp will light on solid.
2. Connect positive charger clip (red) to positive battery terminal, the black clip
to negative. (You can use other dc plugs to connect battery), the
“25%~100%” lamps will light on flowing. If the battery polarity reversed or
output shorted, all lamps will flashing, please check the setup.
3. Depend on the charged capacity, 25%~100% lamps will lights up solid
sequence, until the battery is fully charged. Then you can power off the
charger and disconnect the battery or you can charge a new battery if you
need.
The table shows the durationof 95% state charged for anempty battery.
Battery Cap.（Ah）
G100-24N hours G100-36NS hours
3.6 1.5 2.5
8.0 3 5
13.0 5 8
22.0 8.5 13
Charging process indicator:
Indicate battery capacity from 25% to 100% when
charging.
All lamps flashing means battery polarity reversed or
output shorted.
All lamps are “off” means no battery.
Power on
(When AC
input OK)