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IMPORTANT SAFETY 
INSTRUCTIONS 

THIS PORTION OF THE MANUAL CONTAINS IMPORTANT SAFETY INSTRUCTIONS FOR THE 
OPTIMATE LITHIUM BATTERY CHARGER. IT IS OF THE UTMOST IMPORTANCE THAT EACH 
TIME, BEFORE USING THE CHARGER, YOU READ AND EXACTLY FOLLOW THESE 
INSTRUCTIONS. SAVE THESE INSTRUCTIONS. 

AUTOMATIC CHARGER FOR 12.8V L

I

F

E

PO

4

 (LITHIUM IRON PHOSPHATE ) 

BATTERIES. DO NOT USE FOR NiCd, NiMH, Lead-Acid or any other type 

of Li-Ion OR NON-RECHARGEABLE BATTERIES. 

1. CAUTION : CLASS II APPLIANCE. DO NOT CONNECT TO GROUND.
2.  Do not expose charger to rain or snow.
3. Use of an attachment not recommended or sold by the battery charger manufacturer may result in a risk of fire, electric shock,or injury to 
persons.
4. To reduce risk of damage to electric plug and cord, pull by plug rather than cord when disconnecting charger.
5. An extension cord should not be used unless absolutely necessary. Use of 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) the extension cord is property wired and in good electrical condition,and
c) the conductor wire size is large enough for the AC ampere rating of the charger as specified in the table below.

AC INPUT RATING IN AMPERES

Equal to or greater than But less than

LENGTH OF CORD, 

FEET (m)

 AWG SIZE 

OF CORD

2A

3A

 25 (17.6) 
 50 (15.2) 

100 (30.5) 

18
18
14

6. Do not operate charger with damaged cord or plug - replace the cord or plug immediately.
7. Do not operate charger if it has received a sharp blow, been dropped,or otherwise damaged in any way; take it
to a qualified serviceman.
8. Do not disassemble charger; take it to a qualified serviceman when service or repair is required.
Incorrect reassembly may result in a risk of electric shock or fire.
9. To reduce risk of electric shock, unplug the charger from outlet before attempting any maintenance or cleaning.
Turning off controls will not reduce this risk.Clean only with slightly moist,not wet, cloth.Do not use solvents.
10. WARNING - RISK OF EXPLOSION.
a) WORKING IN VICINITY OF A Lithium Iron Phosphate BATTERY IS DANGEROUS. BATTERY TEMPERATURE (measured at the battery) 
INCREASE DURING NORMAL BATTERY OPERATION AND DURING CHARGING AND THERE IS A RISK OF EXPLOSION IF THE BATTERY IS 
OVERCHARGED. 
b) Lithium Iron Phosphate BATTERIES HAVE A LIMITED SAFE TEMPERATURE RANGE OF -20

O

C / 4

O

F TO 85

O

C / 185

O

F. 

BATTERIES SHOULD NOT BE USED OR CHARGED IF THE BATTERY CASING OR ENVIRONMENT TEMPERATURE IS OUTSIDE OF THIS RANGE.

FOR THIS REASON, IT IS OF UTMOST IMPORTANCE THAT YOU FOLLOW THE INSTRUCTIONS EACH TIME YOU USE THE CHARGER.
b) To reduce risk of battery explosion, follow these instructions and those published by the battery manufacturer and manufacturer of any 
equipment you intend to use in vicinity of the battery. Review cautionary marking on these products and on engine.

11. PERSONAL PRECAUTIONS.

a) Someone should be within range of your voice OR close enough to come to your aid when you work near a 

Lithium Iron Phosphate 

 

battery.
b) Have plenty of fresh water and soap nearby in case battery contents contacts skin, clothing or eyes.
c) Wear complete eye protection and clothing protection. Avoid touching eyes while working near battery.
d) If battery contents contacts or enters eye, flood eye with cold running water for at least 10 minutes and get medical
attention immediately. If battery contents contacts skin or clothing, wash immediately with soap and water. If battery content enters
an eye , immediately flood eye with running cold water for at least 10 minutes and get medical attention immediately.
e) NEVER smoke or allow a spark or flame in vicinity of battery or engine.
f) Be extra cautious to reduce risk of dropping a metal tool onto battery. It might spark or short-circuit battery or other electrical part 
that may cause explosion.
g) Remove personal metal items such as rings, bracelets ,necklaces , and watches when working with a 

Lithium Iron Phosphate

battery. A 

Lithium Iron Phosphate

 battery can produce a short-circuit current high enough to weld a ring or the like to metal,

causing a severe burn.
i) NEVER charge a frozen battery.

SAFETY

Summary of Contents for TM290

Page 1: ...and pictures are not easy to see At times you will find the overall look of the instructions to be less than professional However we feel it is better to provide what we have rather than provide nothing at all To the best of our knowledge the instructions and application information contained in the instructions is accurate However Dennis Kirk assumes no liability related to any errors that may be...

Page 2: ...K Lees volledig voor gebruik INSTRUÇÕES DE UTILIZAÇÃO IMPORTANTE Ler antes de utilizar ISTRUZIONI PER L USO IMPORTANTE da leggere prima di utilizzare l apparecchio INSTRUKTIONER VIKTIGT läs följande fullständiga instruktioner för användningen innan du använder laddaren Automatic charger for 12 8V LiFePO4 batteries Chargeur automatique pour batteries 12 8V LiFePO4 Cargador automático para baterías ...

Page 3: ...ion 2 5 4 3 OPTIMIZE final 20 equalize CHARGE from 12 8V to 14 3V SAVE from 0 5V to 12 8V LED MODE FLASHING 100 ON LED indications illustration 1 Early warning of battery problems Avertissement anticipé des problèmes de batterie illustration 2 TEST VOLTS 10 12 73 12 99 13 13 13 30 0 5 90 61 90 11 30 VOLTAGE RETENTION TEST TEST DE RÉTENTION DE VOLTAGE 31 60 0 10 ...

Page 4: ... Clean only with slightly moist not wet cloth Do not use solvents 10 WARNING RISK OF EXPLOSION a WORKING IN VICINITY OF A Lithium Iron Phosphate BATTERY IS DANGEROUS BATTERY TEMPERATURE measured at the battery INCREASE DURING NORMAL BATTERY OPERATION AND DURING CHARGING AND THERE IS A RISK OF EXPLOSION IF THE BATTERY IS OVERCHARGED b Lithium Iron Phosphate BATTERIES HAVE A LIMITED SAFE TEMPERATURE...

Page 5: ... if the battery has been inversely connected Set charger switches to off position and or remove AC cord from electrical outlet disconnect the battery clips then reconnect correctly according to the instructions below 15 FOLLOW THESE STEPS WHEN BATTERY IS INSTALLED IN VEHICLE SHORT CIRCUITING OF THE BATTERY TERMINALS MAY CAUSE BATTERY EXPLOSION TO REDUCE RISK OF SHORT CIRCUITING THE BATTERY a Posit...

Page 6: ...uring the SAVE mode the safe T program limits charge current if the voltage is below 12 8V and the ampmatic program should detect obvious cell damage and will automatically suspend charging but the higher the cell count in parallel the more difficult it is to detect a bad cell e g a 5Ah battery typically has 4 series connected sets of 2 parallel cells 4S2P configuration total 8 cells a 10Ah batter...

Page 7: ...ate low power ECO mode This will occur if there is no battery connected or when a battery is connected and the program finds itself in the voltage retention test mode or the rest periods of Maintenance Charge mode REVERSE POLARITY PROTECTION LED 2 Lights when the battery connections are incorrect The charger is electronically protected so no damage will result and the output will remain disabled u...

Page 8: ...apacity less than 5Ah charge current is automatically adjusted lower to an average equal to battery Ah capacity e g a 2 5Ah 2500mAh battery receive an average of 2 5 Amps NOTE For safety reasons there is an overall charge time limit of 24 hours for SAVE and CHARGE modes OPTIMIZE LED 5 The OPTIMIZE mode starts when the voltage has reached 14 3V for the first time during bulk CHARGE mode Pulsed abso...

Page 9: ...d wiring or a degraded switch or contact or in circuit current consuming accessories A sudden load being switched on while the charger is connected can also cause the battery voltage to dip significantly 3 GOOD TEST RESULT but the battery cannot deliver sufficient power Permanent damage within the battery may be causing excessive self discharge that is not detected within the test period of 12 hou...

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