Deltran Battery Tender BT-TWIN 800 Instructions Manual

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12 Volt Models: 800 Milliamp, Dual Output

IMPORTANT SAFETY INSTRUCTIONS

SAVE THESE INSTRUCTIONS: This manual contains

important safety and operating instructions for the Deltran Battery
Tender®, BT-TWIN 800, Dual Output 12 Volt 800 Milliamp,
International Battery Chargers. CAREFULLY READ THESE

INSTRUCTIONS BEFORE USING THE BATTERY CHARGER.

WARNING AND CAUTION LABEL DEFINITIONS:

WARNING

WARNING indicates a potentially hazardous situation, which, if not
avoided, could result in serious injury or death.

CAUTION

CAUTION indicates a potentially hazardous situation, which, if not
avoided, may result in minor or moderate injury.

CAUTION

CAUTION used without the safety alert symbol indicates a
potentially hazardous situation that if not avoided, may result in
property damage.

GENERAL PRECAUTIONS

WARNING

Battery posts, terminals and related accessories contain lead and
lead components, and other chemicals known to the State of
California to cause cancer and birth defects or other reproductive
harm. Always wash your hands after handling these devices.

WARNING

Always use adequate eye protection when working around
batteries and battery charging equipment.

WARNING

Do not operate the battery charger with damaged AC power cords
or plugs or DC output cords or accessories - Replace damaged
power cords & accessories immediately.

Deltran Battery Tender

BT-TWIN 800

Dual Output

International Battery Chargers

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CAUTION

WORKING WITH LEAD ACID BATTERIES AND BATTERY CHARGERS: All

lead acid batteries have the potential to emit gasses that may combine into a
combustible or explosive mixture. In many cases, it is possible that lead acid
batteries will emit these gasses during normal discharge and charging
operations. Because of this potential danger, it is important that you follow the
precautions recommended by both the battery and battery charger
manufacturers before using either one.
USING MANUALS: Study all of the battery manufacturer's precautions and
specific recommendations for safe operation such as not removing cell caps
while charging and the recommended rates of charge (charger output current).

CAUTION

CHARGER LOCATION: LOCATE the charger as far away from the battery as

is allowed by the length of the output cable harness. NEVER set the charger
above the battery. NEVER set the charger on a surface constructed from
combustible material.
CHARGER VOLTAGE COMPATIBILITY: NEVER use a battery charger
unless the battery voltage matches the output voltage rating of the charger.
For example, do not use a 12-volt charger with a 6-volt battery and vice-versa.
EXCESSIVE MOISTURE: Do not expose the Deltran Battery Tender BT-
TWIN 800 International Battery Chargers to rain or snow, or excessive
moisture of any kind, including high, near 100% condensing humidity
environments.
CHARGER ATTACHMENTS: Do not use attachments that are not
recommended or sold by Deltran or its affiliates. To do otherwise may result in
the risk of electric shock, fire, or possibly some other unforeseen potential
personal injury situations.
HANDLING POWER CORDS: When handling electric power cords, always
pull by the plug rather than by the cord. This will reduce the risk of damage to
both the plug and cord, and it will minimize the likelihood of electric shock
resulting from that damage.
LOCATION OF POWER CORDS: Make sure all electric power cords are
located so that they cannot be stepped on, tripped over, or otherwise
subjected to damage or stress.
MONITORING SEALED & NON-SEALED BATTERIES: When leaving a
battery charger connected to either a sealed (AGM or GEL) or non-sealed
(flooded battery) for extended periods of time (weeks, months, etc.),
periodically check the battery to see if it is unusually warm. This is an
indication that the battery may have a weak cell and that it could go into a
thermal runaway condition. If the battery releases an excessive amount of gas
or if the battery gets hotter than 130°F (55°C) during charging, disconnect the
charger and allow the battery to cool. Overheating may result in plate
distortion, internal shorting, drying out or other damage. For flooded batteries,
also check individual cell fluid levels against manufacturer's recommendations
for safe operation.

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WARNING

ELECTRIC SPARK & OPEN FLAME: NEVER smoke or allow a source of

electric spark or open flame in the vicinity of the battery or engine. (For
example: Don't charge the battery next to a gas water heater.)
VENTILATION: Do not operate the charger where ventilation is restricted.
The intent here is to allow sufficient airflow to minimize and dissipate the heat
generated by the charger and to diffuse the gasses that may be emitted by the
battery.
CHARGER MAINTENANCE: NEVER disassemble the charger or attempt to
do internal repairs. Take it to a qualified service technician. Assembling the
charger incorrectly may result in the risk of electric shock or create a fire
hazard.

WARNING

EXTENSION CORDS: An extension cord should not be used unless

absolutely necessary. Using improper extension cord could result in a risk of
fire and electric shock. If extension cord must be used, make sure that:
Ø The pins on the extension cord plug have the same number, size, and

shape as those of the AC power cord plug on the charger;

Ø The extension cord is properly wired and is in good electrical condition;

and

Ø The wire size is as specified in Table 1 below.

TABLE 1: EXTENSION CORD

LENGTH & MINIMUM SAFE CONDUCTOR SIZE

Note: The smaller the AWG number, the larger the conductor diameter.

Length of Cord (feet) 6 to 100 101 to150
Length of Cord (meters) 1.8 to 30.5 30.8 to 45.6
Size of Conductor (AWG) 18 16
Conductor Diameter (mm) 1.25 1.5

PERSONAL PRECAUTIONS

WARNING

WHEN YOU WORK NEAR LEAD-ACID BATTERIES:

1. Someone should be within range of your voice or close enough to come to

your aid if you have an accident;

2. Have plenty of fresh water and soap nearby in case battery acid contacts

skin, clothing, or eyes;

3. Wear complete eye protection and protective clothing. Avoid touching your

eyes while working near a battery. If battery acid contacts your skin or
clothing, wash immediately with soap and water. If acid enters an eye,
immediately flood the eye with running cold water for at least 10 minutes
and get medical attention as soon as possible;

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4. Be extra cautious when handling metal tools around a battery. If you drop
a metal tool near a battery it might spark or create a short circuit between
the battery terminals and some other metal part. Either event may cause
a dangerous electrical shock hazard, a fire, or even an explosion;

5. Remove all personal metal items such as rings, bracelets, necklaces, and
watches when working with a lead-acid battery. A lead-acid battery can
produce a short-circuited current high enough to weld a metal ring or other
piece of jewelry, causing a severe burn;

6. Use the Deltran Battery Tender BT-TWIN 800 International Battery
Chargers for charging lead-acid batteries only. They are not intended to
supply power to an extra low-voltage electrical system or to charge dry-cell
batteries. Charging dry-cell batteries may cause them to burst and cause
injury to persons and damage to property;

INFORMATION NOTE ABOUT DRY-CELL BATTERIES:

There are some wet, non-spillable, lead acid batteries on the market whose
manufacturers' make the claim that they are dry-cell batteries. These batteries
are sealed, gas-recombinant, starved electrolyte, possibly with AGM
(Absorbed Glass Mat) type construction. It is perfectly safe to use the Deltran
Battery Tender BT-TWIN 800 International Battery Chargers to charge these
types of batteries. The dry-cell battery warning is intended for non­rechargeable alkaline, rechargeable NiCd, Li-ion, NiMH and other similar types
of batteries. If you have any doubt about the type of battery that you have,
please contact the battery manufacturer before attempting to charge the
battery.

7. NEVER charge a visibly damaged or frozen battery.

PREPARING TO CHARGE: First, follow all General &

Personal Precautions as previously explained, and then
continue.

WARNING

IF THE BATTERY MUST BE REMOVED FROM THE VEHICLE:

1. To avoid an electric arc (or spark), turn off or disconnect all of the
accessories in the vehicle. Then always remove the cable that is
connected to grounded terminal from battery first;

2. If necessary, clean the battery terminals. Be careful to keep the corrosion
and other debris from coming in contact with your eyes;

3. If the battery is not a sealed battery, then if necessary, add distilled water
to each cell until the battery acid solution reaches the level specified by
battery manufacturer. Do not overfill;

4. Before inserting the charger AC power plug into the electrical wall outlet,
separate the battery charger output cable assembly from the charger.
Then connect the battery charger output cable assembly rings or clips to
the battery posts, maintaining the correct polarity. Then connect the quick
disconnect plug to the mating plug on the charger output;

5. Connect the AC power plug to the electrical outlet.

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WARNING

IF THE BATTERY REMAINS INSTALLED IN THE VEHICLE:

1. DO NOT CONNECT THE CHARGER AC POWER PLUG TO THE
ELECTRICAL OUTLET UNTIL ALL OTHER CONNECTIONS ARE MADE!

2. Place both the AC and DC power cords in the best position to avoid
accidental damage by movable vehicle parts, i.e. hoods, doors, or moving
engine parts (fan blades, belts, or pulleys).

3. Check the polarity of the battery posts. If the positive (pos, p, +) post is
connected to the vehicle chassis, then the vehicle has a positive ground
system. If the negative (neg, n, -) post is connected to the vehicle
chassis, then the vehicle has a negative ground system. Negative ground
systems are the most common.

4. For negative ground systems, connect the positive (red) alligator clip, or
ring terminal to the positive battery post. Then connect the negative
(black) alligator clip, or ring terminal to the vehicle chassis. Do not make
the negative charger clip or ring connection to the carburetor, fuel lines, or
thin, sheet metal parts. Make that connection to the engine block or a
heavy gauge metal part of the frame.

5. For positive ground systems, connect the negative (black) alligator clip, or
ring terminal to the negative battery post. Then connect the positive (red)
alligator clip, or ring terminal to the vehicle chassis. Do not make the
positive charger clip or ring connection to the carburetor, fuel lines, or thin,
sheet metal parts. Make that connection to the engine block or a heavy
gauge metal part of the frame.

6. Connect the AC power plug to the electrical outlet.

ADDITIONAL CHARGER INFORMATION

AUTOMATIC CHARGING AND BATTERY STATUS
MONITORING: The Deltran Battery Tender BT-TWIN 800 International

Battery Chargers are completely automatic and may be left connected to both
AC power and to the battery that it is charging for long periods of time.
However, it is prudent to periodically check both the battery and the charger for
normal operation during these extended charging periods.

The charger output power, voltage, and current all depend on the condition of
the battery that is being charged. Deltran Battery Tender BT-TWIN 800
International Battery Chargers have 1 status light that illuminates in two colors
(one amber, and one green) to indicate both the operating mode of the charger
and the condition of the battery that is connected to the charger.

The charger operates in one of the 2 primary charge modes: the bulk mode
(full charge power, constant current, increasing battery voltage, battery is 0%
to nearly 100% charged), or the storage / float maintenance mode (low
constant voltage, minimal charge current, battery is 100% to 103% charged).

When the battery is fully charged, the green status indicator light will turn on
and the charger will switch to a storage / float maintenance charge mode.
Deltran Battery Tender BT-TWIN 800 International Battery Chargers will
automatically monitor and maintain the battery at full charge.

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SPECIAL FEATURES: Deltran Battery Tender BT-TWIN 800

International Battery Chargers have the following special features:

SPARKPROOF: The battery charger DC output leads, either ring

terminals or alligator clips must be connected to a battery before an output
voltage is developed by the battery charger.

SHORT CIRCUIT PROTECTION: The battery charger can sustain a

short circuit connection directly across its DC output terminals indefinitely
without any risk of either electric shock or excessive heat.

REVERSE POLARITY PROTECTION: The battery charger is

protected internally against any damage due to the DC output leads being
connected to the opposite polarity battery post. No damage will result to either
the battery or the battery charger.

TIME REQUIRED TO CHARGE A BATTERY:

The Deltran Battery Tender BT-TWIN 800 International Battery Chargers
charge at a rate of 0.8 Amps (0.8 Amp-Hours per hour). Therefore, a fully
discharged 15 Amp-Hour battery will take approximately 20 hours to recharge
to 100% capacity. Some large automotive or marine, deep cycle batteries may
take several days to fully recharge.

WORKING WITH A DEAD BATTERY OR A BATTERY WITH A VERY
LOW VOLTAGE:

If you try to charge a dead battery having a voltage below 3 Volts, the Deltran
Battery Tender BT-TWIN 800 International Battery Chargers will not start to
charge because an internal safety circuit prevents the battery chargers from
generating any DC output voltage.

NOTE:

If a 12 Volt, Lead-Acid battery has an output voltage of less than 9 volts when
it is at rest, when it is neither being charged nor supplying electrical current to
an external load, there is a good chance that the battery is defective. As a
frame of reference, a fully charged 12-Volt, Lead-Acid battery will have a rest­state, no-load voltage of approximately 12.9 volts. A fully discharged 12-Volt,
Lead-Acid battery will have a rest-state, no-load voltage of approximately 11.4
volts. That means that a voltage change of only 1.5 volts represents the full
range of charge 0% to 100% on a 12-Volt, Lead-Acid battery. Depending on
the manufacturer, and the age of the battery, the specific voltages will vary by
a few tenths of a volt, but the 1.5-volt range will still be a good indicator of the
battery charge %.

STATUS INDICATOR LIGHTS: The following describes the
indicator light operation:

Ø AMBER LIGHT ON STEADY – Whenever the amber light is on, a

battery is connected properly and the charger is charging the battery. The
amber light will remain on until the battery is fully charged, or the
connection between the charger and the battery is broken.

Ø GREEN LIGHT ON STEADY – When the green light is on, the charge is

complete and the battery can be returned to service if necessary.

Ø ALTERNATING AMBER & GREEN LIGHTS – This is abnormal and

most likely indicates that the battery is sulfated, or that there is an
intermittent or high resistance electrical connection in the DC output.

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STATUS INDICATING SYMBOLS: The following symbols are

located on each side of the single status indicator light that glows either
amber or green. These symbols are visual reminders of the status
indicator light meaning. 2 Status Indicator Lights

Note: 1 DC Connection is behind each indicator light ……………..
AC Power Connection Type: IEC-60320

C7 Power Cord Plug mates with C8 Module

The above diagram shows how
symbols are arranged around each
indicator light.

The symbol on the left side of the light represents a partially
charged battery. The solid green band across the bottom
indicates the charged portion of the battery and the black area
represents the uncharged portion. The background area
around the partially charged battery symbol is shaded amber.

The symbol on the right side of the light represents a fully
charged battery. The entire area inside the battery outline is
green. The background area around the fully charged battery
symbol is shaded green.

TROUBLESHOOTING CHECK LIST:

1. THE AMBER CHARGER LIGHT DOES NOT TURN ON AFTER THE AC
POWER PLUG IS CONNECTED TO THE AC ELECTRICAL OUTLET: Make

sure that the charger output is properly connected to the battery. 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.

2. THE CHARGER GREEN LIGHT GOES ON ALMOST 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.

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SPECIFICATION SUMMARY:

Technical Specifications (BT-TWIN 800 models)

Input Voltage / Frequency

100 to 240 VAC @ 50 / 60 Hz

Input Current (Maximum)

0.55 Amps RMS

Output Current Typical

0.800 Amps DC per channel

Output Voltage

12 Volts DC

Charger Output Voltage Amplitudes throughout the entire
charge algorithm, including absorption and float maintenance,
are consistent with the optimum charging recommendations of
the major lead-acid battery manufacturers.

Maximum Operating Temperature

50 °C Typical

Charger Case Dimensions:

8.8 in (224 mm) L x 6.0 in (152 mm) W x 6.5 in (165 mm) H.

Shipping Weight:

with Accessories:

Approx. 3.0 lbs (1.4 kg)

Design Conformance & Revision: All charger products are 100%
inspected and electrically tested prior to shipment. All battery charger
designs are proprietary and subject to change without notice.
Manufacturer makes no specific claims nor does it either make or
imply any specific guarantee or warranty with respect to either the
physical configuration or performance of any of the battery charger
products listed herein, including suitability for purpose or
merchantability.

Limited Warranty: 3 Years on material and workmanship only.
This does not include outer case breakage or cosmetic flaws on the
outer case unless such damage is reported in writing along with a copy
of the purchase receipt, via mail, email, or facsimile within 30
working days after the date on the purchase receipt. No warranty for
outer case breakage or cosmetic flaws will be considered without a
copy of the purchase receipt.

Other details regarding warranty limitations and procedures are
contained in the Deltran Battery Tender® Chargers General Limited
Warranty information sheet enclosed with this product.

DELTRAN CORPORATION

801 U.S. Highway 92 East

DeLand, Florida 32724

Phone [phone] FAX [phone]

www.batterytender.com