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AMBER LIGHT ON STEADY (Both models)

 – Whenever the amber light 

is on steady, a battery is connected properly and the charger is charging 

the battery.  The amber light will remain on until the charger completes the 

charging stage. 

 

GREEN LIGHT FLASHING (1.25A only)

  - When the green light is 

flashing, and the amber light is on, the battery is greater than 80% 

charged and may be removed from the charger and used if necessary.  

Whenever possible, leave the battery on charge until the green light is 

solid. 

 

GREEN LIGHT ON STEADY (Both models)

  - When the green light stops 

flashing and burns steady, the charge is complete and the battery can be 

returned to service if necessary. 

 

ALTERNATING AMBER & GREEN LIGHTS FLASHING (Both models)

 

– This is abnormal and most likely indicates that the battery is sulfated. 

 

STATUS INDICATING SYMBOLS:  

The following symbols are located 

next to the 2 status indicator lights, one amber, one green (1.25 A) or 

on each side of the single status indicator light that glows either amber 

or green (800 mA). 

 

The symbol next to the AMBER light represents a partially 

charged battery.  The solid band across the bottom is green in 

color.  The background is yellow.  The green area indicates the 

charged portion of the battery and the yellow area represents 

the uncharged portion. 

 

The symbol next to the GREEN light represents a fully charged 

battery.  The entire area inside the battery outline is green. 

 

 

TROUBLESHOOTING CHECK LIST:   

 

1. 

NEITHER OF THE CHARGER LIGHTS TURN ON AFTER THE AC POWER 
PLUG IS CONNECTED TO THE AC ELECTRICAL OUTLET: 

 

For the 1.25A 

model: 

Check the charger AC power plug connection at the AC electrical outlet.  

Verify that the AC electrical outlet is functioning properly by plugging in another 
appliance or a voltmeter.  For the 0.8 A model, also make sure that the charger output 
is properly connected to the battery. 

2. 

THE CHARGER GREEN LIGHT GOES ON IMMEDIATELY WHEN AC 
POWER IS APPLIED TO THE CHARGER:

  

The charger connections at the 

battery may be intermittent, the battery may be defective, or the battery might already 
be fully charged. 

3. 

CHARGER IS CHARGING BUT THE GREEN LIGHT DOES NOT TURN ON 
IN A REASONABLE AMOUNT OF TIME:

  

The battery may be large and requires 

more time to fully charge than originally expected, there may be another appliance 
drawing electric power from the battery while it is charging, or the battery may be 
defective.  Also, a newly purchased battery may not be fully charged and may take 
longer to charge initially. 

4. 

THE AMBER LIGHT COMES ON AGAIN AFTER THE GREEN LIGHT 
CAME ON.

  

There may be another appliance drawing electric power from the battery 

causing its voltage to drop below the reset level.   The battery charger then goes back 
into full charge mode.  Also, the charger connections at the battery may be intermittent 
or the battery may be defective. 

 

SPECIFICATION SUMMARY:

 

 

Technical Specifications (0.8 Amp or 1.25 Amp Models) 

Input Voltage 

100 to 240 VAC 

Input Frequency 

50 / 60 Hz 

 0.275 or 0.3 Arms @ 100 VAC 

Input Current 

 0.08 or 0.1 Arms @ 240 VAC 

 

Output Current 

Bulk Charge 

800 mADC Constant 

or 1.25 ADC  

Absorption Charge 

14.5 VDC Constant 

Output Voltage 

Maintenance Charge 

13.2 VDC Constant 

 

Input to Output 

2500 VAC 

Input to Chassis 

2500 VAC 

Electrical 

Isolation 

Output to Chassis 

  500 VAC 

 

Operating Temperature 

-20 

°

C to +50 

°

Enclosure Protection Against 

Foreign Object & Water Ingress 

IP67 

 

Charger Case Dimensions: 

 

0.8 Amp:

  4.25 in (108 mm) L 

2.75 in (70 mm) W 

x

1.5 in (38 mm) H.  

1.25 Amp:

  5.4 in (137 mm) L 

2.9 in (74 mm) W 

x

1.6 in (41 mm) H.   

 

Note:  For both models, allow an additional 1 in (25.4 mm) on each 

end of the length dimension for safe bend of AC and DC power cord 

strain relief. 

 

Shipping Weight:   

0.8 Amp:

 Approx. 2.0 lbs (0.91 kg) 

1.25 Amp:

 Approx. 2.5 lbs (1.2 kg)

 

WITH: 

Accessories & 

Retail Packaging

 

Acceptable Battery Cell Type, Number, and Ah Capacity 

Charger Model  Cell Type 

Number  Ah Capacity 

12V, 0.8 Amp 

Lead Acid, All 

but Gel Cell 

6 Cells 

Up to 65 Ah 

12V, 1.25 Amp  Lead Acid, All 

but Gel Cell 

6 Cells 

Up to 95 Ah 

 

DELTRAN CORPORATION 

801 U.S. Highway 92 East 

DeLand, Florida 32724 

Phone 386-736-7900  FAX  386-736-0379 

www.batterytender.com

 

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