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Inexpensive multistage microcontroller based lead acid battery
charger voltage charger with 20 VDC to 30 VDC input. Charge 12 volt lead acid
batteries. Charge any lead acid battery from a large one, or from a Humvee,
truck, fork lift, truck, tractor or back-hoe. |
Heavy
Duty, Industrial, Marine, and Military DC input battery chargers click
here.
For 12V to 12V,
12V to 24V, 24V to 24V DC chargers click here |
.
| Model Number |
PST-BC2412-15
DCDC Charger |
24V to 12V charger
|
$225
 |
XLR Charger Cable
 |
$19.50
|
| Model Number |
PST-BC2412-15
DCDC
Charger |
| Input Voltage Range |
24 Volt nominal, range 20 VDC to
30 VDC |
| Battery Voltage (nominal) |
12 Volts |
| Continuous Charging Current |
7.5 Amps |
| Charge Current Options |
The peak charge current can be
adjusted to 1-7.5 |
| Charging Algorithm |
4 stage, 3 level adaptive
microprocessor controlled
State diagram showing
the charge algorithm |
| Battery Size |
0.5 AH to 100+ AH |
| Protections |
Low input voltage
protection
High input voltage protection
Over temperature
protection
Output short circuit protection
Battery polarity
protection |
| Dimensions |
200 x 164 x 67 mm
7.9 x 6.7 x
2.8 inches
Click Here for a Dimensioned Drawing.
|
| Connection |
Input: screw
terminals
Output: binding posts |
| Isolation |
Non-isolated, the negatives are
common on the input and output |
| Cooling |
Controlled DC Fan |
| Operating Temperature |
0-55°C |
| Weight |
1.5 kg, 3.3 pounds |
The following table describes the display of LED lights at
different stages of charging:
| Status |
Completion |
Red LED 1 |
Red LED 2 |
Yellow LED |
Green LED |
| Standby |
|
LEDs cycle while waiting |
| Trickle before bulk charge |
0-10% |
The two red LEDs cycle |
Off |
Off |
| Bulk charge |
10-90% |
Off |
Red 2 and yellow cycle |
Off |
| Fill charge (also known as "over
charge") |
90-99% |
|
|
Yellow and green cycle |
| Float charge |
100% |
|
|
|
Green flash |
| Low battery voltage alarm |
|
Flash |
Off |
Off |
Off |
| High battery voltage alarm |
|
Off |
Flash |
Off |
Off |
| Low input voltage alarm |
|
Flash |
Off |
On |
Off |
| High input voltage alarm |
|
Off |
Flash |
On |
Off |
| Over temperature alarm |
|
Off |
Off |
Flash |
Off |
Q: Can I leave the battery continuously on the
charger?
A: Yes, the charger will go into "maintenance mode" and keep
the battery topped off.
Q: Can I draw power from the battery when the
charger is connected?
A: Probably. . . There is some pulsing going on
with the charger which your equipment might not be happy with (it is a
pulse-charger, 1 second pulses with 20mS gaps), but if you combine this with
the battery the battery will fill in the gaps, so the ripple is no more than it
would see in an automotive application.
Q: If I discharge the battery
while the charger is attached will the charger maintain a full
charge?
A: Yes, When the charger detects that the battery voltage has
dropped it knows that the battery needs to be charged and goes into "bulk
charge" mode again automatically.
Q: Can the charger be left connected to
the battery when the charger is not turned on, or when the input voltage of the
charger has been cut off?
A: Yes.
Q: Can the charger be adjusted
to lower currents?
A: Yes.
There are two trimpots that we can adjust here or click here to view the
instructions
Advantages:
Inexpensive DC input charger.
Protects even small 12 volt batteries from gassing or damage.
Charge time is typically 58% charge in 1 hour, 82% in 2 hours, 93% in 3 hours,
98% in 4 hours.
Charge efficiency is 95% for the a SLA, VRLA, or Gel Cell battery and 85%
for the charger, making a combined efficiency of 81%. So a 24 volt 100 AH
battery would be able to charge a 12 volt 10 AH battery 16 or 18 times before
the host battery needed recharge.
Applications:
Auxiliary batteries, hobby batteries, bicycles, and scooters in a car, van
or bus.
Microprocessor controlled 4 stage adaptive charging algorithm suitable for
Gel, Absorbed Glass Mat, VRLA, or flooded lead acid batteries.
Fully automatic without intervention.
Output short circuit and battery polarity protections. Input low voltage and
high voltage connections.
Charging 12 volt sealed lead acid batteries from a vehicle.
Charging 12 volt "jump start" batteries from a 24 volt tow truck or service
vehicle.
Charging 12 volt electric bicycle from a 24 volt vehicle.
Four stage charge--constant current, constant voltage, fill, and float. This
charges your battery the fastest way possible without damaging the battery. It
is suitable for any size 12 volt lead acid battery.
Installation
Notes:
- A qualified automotive electrical technician should be used
to wire the charger into the vehicle.
- The BC-2412-15 converts 24 volt power into 12 volt power, so
for a 7.5 amp output the input needs over 4 amps. Make sure that the wires
connecting the BC-2412-15 are adequate for the current and the length of the
run. If the voltage drop in the wires are too much the "Low Battery Voltage"
alarm will come on. Wires that are too small may also overheat and melt the
insulation, causing a dangerous situation. 12 gauge is usually adequate for
runs up to 20 feet of wire (adding together the positive and negative wire
lengths).
- PowerStream has available the connector that fits into many
wheelchair ( we have the 3 pin XLR style in stock
). Consult the manufacturer or a wheel chair technician to obtain the proper
cable and plug. (If you know about such things please educate us!)
- Try to connect or disconnect the battery when the charger
power is "on." It is possible but extremely rare for the charger to go into a
temporary fault mode if the battery is connected first, but cycling the power
switch will clear this "false fault."
- It is OK to leave the unit on the charger when the power to
the charger goes on and off.
- Mount the BC-2412-15 in an area that will get adequate
ventilation and will be free from rain, spray, or excessive dust.
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