Battery Sentinel Charger (24 volt - 6 amp - Dual Voltage)

24 Volt 6 amp Constant Current
equivalent to 12A tapered charger in charging time

Advanced built in circuitry protects against:
Reverse Polarity
Short Circuit
A/C Surge
Over-Voltage
Over-Current

Fully Automatic Suitable for 24 volt wet-lead-acid, Sealed-lead, gel, and absorbed mat and Switch-Mode Technology Batteries

Compact – 6.9” L x 3.7” W x 1.9” H

Lightweight – 1.7 lbs. (750 grams)

The Most Advanced, Fully Automatic Charger Ever!
The Battery Charger & Maintainer Specifically Designed for Car, Light Truck, Recreational & Utility Vehicle Batteries. Solid State Technology Keeps Batteries Fully Charged & living Years Longer.

NEVER WORRY ABOUT OVERCHARGING AGAIN!

JUST “PLUG US IN”
THE BUILT IN PROTECTION SYSTEM WILL TAKE CARE OF THE REST

SAFETY!
SUPERIOR Technology means you’ll never have to worry about OVERCHARGING again.
Just connect your battery charger and keep your battery fully charged!

SPEED!
Our Constant current switching technology charges batteries faster!

SAVINGS!
Battery Sentinel prolongs battery life!

Totally Automatic Switch-Mode Battery Chargers
"Suitable for Gel, Sealed & Wet Lead Acid Batteries"

	Summary:
	Summary : 24 V, 6Amp Constant Current (equivalent to 12A tapered charger in charging time)
	Automatic Cut-off and then true Float. Can be left connected indefinitely without harming the battery
	UL , CSA, European Standard EN60335 Part 2.29 and CE European EMC Directive) Listed
	Input 115/230 VAC - Suitable for U.S., Canada, Japan, Europe
	Increases battery life by de-sulfating the battery
	0.5 seconds time delay for output ON
	Very small size and very lightweight

Explanation of Features:
The advance technology of the Battery Sentinel is fundamentally different from other battery chargers. The conventional linear battery charger is an electrical device whereas the Battery Sentinel #22361 is a light weight sophisticated electronic device.

1. Switch-Mode Technology:
Most of the battery chargers use linear technology, which convert the 115/230 VAC to 24 VDC at 60/50 Hz. This requires a large transformer which has the disadvantage of lower efficiency resulting in higher heat generation, larger size and weight.

The Battery Sentinel Battery Charger transforms the 115/230 VAC into 24 VDC at 100,000 Hz (3333 times faster than conventional charger) which requires a much smaller transformer and this results in a unit of smaller size, low weight and improved efficiency.

The 22361 uses sophisticated electronic circuitry with microchips. All present day computers use switch-mode technology.

2. International Safety Approvals & Listing:
UL, CSA (ULc), European Standard EN60335 Part 2.29 and CE (European EMC Directive) approvals in a single charger.

3. Input Requirements: Dual Voltage - Switch selectable
a) 115 VAC (range 90 - 130 VAC) or 230 VAC (range 180 - 260 VAC)
b) 47 - 63 Hz

Input AC tolerance +/- 20%. This means 22361 will operate satisfactorily in areas where the input voltage is low. This charger is also suitable for every part of the world including Japan where input is 100 VAC.

4. Output:
6 Amps Constant Current @ 24 Volts DC
(Equivalent to 12 Amps tapered in charging time)

a) Line Regulation @ Full Load 2%
b) Load Regulation @ 115/230 VAC 3%
c) Ripple Voltage: Very low

The peak to peak ripple voltage into a resistive load is less than 200mV for the output voltage above 24 VDC.

5. Charging Cycle :
The charging curve is attached. The explanation of the charging cycle is as following.

a) AC connected and battery not connected:
When the charger is connected to the AC power, the red light will be ON, showing that AC power is connected. If the output is not connected to the battery, the green light will flash informing the user that battery side is not connected. Some of the scooter users may be old and if they forget to connect the battery side, the green flashing light reminds them.

b) Charging :
When the charger is connected to the battery and AC is plugged in, the red (power) and yellow (charging) light will be ON.

i) Deep discharge battery : The charger can start charging at the battery voltage as low as 0.5 volts. Battery Sentinel can charge a very deeply discharged battery. Not many chargers can do this. When charging starts, up to 5 volts, the current is 1/3 rd of full current. We want to protect a very deeply discharged battery and do not want to give full current. This charging from 0.5V to 5V only takes few seconds (sometime a fraction of a second) and sometimes it is difficult to measure without sensitive equipment. The red and yellow lights will be on.

Then charger will charge at about full constant current rate and the red & yellow light will be on. Due to the constant current, the charging time will be same as a the twice the tapered charger (e.g. In charging time the Battery Sentinel is equivalent to 12A tapered charger).

ii) Full Charge :
When the battery voltage reaches about 28.8 volts (called upper cut-off voltage), the yellow light changes to green light.

iii) Maintaining full charge:
Battery Sentinel charger maintains the battery at full charge and does not overcharge. This is done by pulse charging. The light remains green.

At upper cut-off voltage, the charger shuts-off complete (zero current). When the battery voltage falls (due to internal losses) to 27.6 volts (lower cut-off which is standby voltage), the charger turns ON and gives a current until the voltage reaches upper cut-off of 28.8V(gives a pulse of current). Then the charger shuts-off again.

By using the pulse method for final charging, the Battery Sentinel maintains the battery at full charge at all time without overcharging. For a new battery with lower internal losses, the pulses are less often. With an older battery with higher internal losses, the pulses are more often. The charger adjusts itself to the requirement of the battery.

Battery Sentinel chargers can charge gel or sealed lead acid batteries without use of any switch.

6. Temperature compensation:
This is an advanced feature normally not found in most chargers. This charger automatically adjusts its output at temperatures above 75°F when the batteries need less terminal voltage to fully charge.

The maximum output voltage and the float voltage will be reduced for ambient temperature above 75°F by (.03 +/- 0.003) V/°F.

7. Two colors in one LED:
LEDs are used to show the charging status. The Red LED shows AC on. The second bicolour LED shows Yellow when charging and changes to Green when the battery is fully charged. The charger will continue to provide very small current to cover internal losses and will maintain the battery at full charge.

8. Very low voltage start: 0.5 Volts
Will charge very deeply discharged batteries . Many 24 volts chargers in the market will not charge batteries discharge below 18 volts.

9. Protection:
User accessible input (AC) and output fuses are provided.
a) Reverse polarity protection - provided
b) Short circuit protection - provided
c) Over-Voltage Protection - provided
d) Over current protection - provided
e) AC Surge Protection - provided
f) Power on-off switch - provided
g) Soft start and stop: Starts and stops gradually.

No sudden in-rush of current. This protects both the batteries and any other circuits connected to the charger.

10. De-sulfation of battery:
The charger will remove loose sulfation and increase the battery life. (Hard sulfation cannot be reversed).

11. No current drain:
No (zero) current is taken from the battery when connected to battery but AC not plugged in. (Many other chargers in the market draw 30-40 mAmp, which drains the battery.)

12. Reliability:

a) Mean Time between failures (MTBF):
30,000 power-on-hours (POH) or greater. This translates into 10 years of everyday operation of 8 hours.

b) Burn-in: All chargers are burned in at an average DC load of 6 Amps.

13. Electromagnetic Interference (EMI):
The charger will not generate excessive radiated or conducted emissions. No interference with TV, radio, computer or other equipment. The charger is in compliance with CE (European EMC Directive). . Meets EN55022, EN50081-1& -2, EN60555 –2 & -3, EN 50082 –1, IEC 801 –2, -3 & -4.

14. Ground leakage current:
The ground leakage current is 87 microAmp, which complies with the requirements.

15. Time Delay of 0.5 seconds:
The model 22361 has a 0.5 seconds delay before the charging starts after the AC power has been turned ON.

Interlock signal : The interlock signal is an open circuit output, leakage less than 5 microAmp or less, when the charger is not connected to an AC source. This signal will be less than 50 mV DC while sinking 10 mA when the charger is connected to an AC source.

Size: Length - 6.9" (175 mm)
Width - 3.7" ( 94 mm)
Height - 1.9" ( 48 mm)

Weight:
1.7 lbs. (750 grams)

View Manual for this product (Adobe PDF Format)