2
• Do not drop a metal tool on the battery. The resulting spark or short-circuit on the
battery of other electrical part may cause an explosion.
• Remove personal metal items such as rings, bracelets, necklaces, and watches
when working with a lead-acid battery.
• A lead-acid battery can produces a short-circuit current high enough to weld a
ring or the like to metal, causing severe burns.
FEATURES
Automatic and Intelligent 9-Stage Charging Curve
The MB3613 is controlled by a microprocessor with 9-stage charging characteristic
for charging batteries automobiles, motorcycles, snow mobiles, tractors, personal
watercraft, boats etc.
A microprocessor senses the condition of the battery to provide the right current and
voltage to the battery (charging characteristic). This will give the best effect on char-
ging and give the longest life to battery.
Charging characteristic:
FIG.1
24V Slow
24V GEL
Fast
24V AGM
Fast
4~28.0V ok
V03≥ Er2
4~28.0V ok
V03≥ Er2
4~28.0V ok
V03≥ Er2
Test
2A until voltage
drops less then 4V
2A until voltage
drops less then 4V
2A until voltage
drops less then 4V
Max 4h
1A until
20V
1A until
20V
1A until
20V
5~16V 2’
16~20V 9h
Increasing voltage
until
28
V 2A
Increasing voltage
until
28
V 3.6A
Increasing voltage
until
28
V 3.6A
Current reduction
28.8V
Current reduction
28.8V
Current reduction
28.8V
/
/
/
Max 36h Max 2h
Check if voltage
drops less then 4V
Check if voltage
drops less then 4V
Check if voltage
drops less then 4V
1.5’’
26.20 - 28.4 4h
26.20 - 28.4 4h
26.20 - 28.4 4h
26.0 - 28.8
26.0 - 28.8
26.0 - 28.8
4h charge cycle
restarts if voltage
drops
Charge cycle
restarts if voltage
drops
12V Slow
12V GEL
Fast
12V AGM
Fast
12V
LIPO4
4~14.0V ok
V03≥ Er2
4~14.0V ok
V03≥ Er2
4~14.0V ok
V03≥ Er2
4~14.0V ok
V03≥ Er2
Test
2A until voltage
drops less then 2V
2A until voltage
drops less then 2V
2A until voltage
drops less then 2V
2A until voltage
drops less then 2V
Max 4h
1A until
10V
1A until
10V
1A until
10V
1A until
10V
5~8V 2’
8~10V 9h
Increasing voltage
until 14V 2A
Increasing voltage
until 14V 7.2A
Increasing voltage
until 14V 7.2A
Increasing voltage
until 14V 7.2A
Current reduction
14.4V
Current reduction
14.4V
Current reduction
14.7V
Current reduction
14.7V
/
/
/
/
Max 36h Max 2h
Check if voltage
drops less then 2V
Check if voltage
drops less then 2V
Check if voltage
drops less then 2V
Check if voltage
drops less then 2V
1.5’’
13.10 - 14.2 4h
13.10 - 14.2 4h
13.10 - 14.2 4h
13.10 - 14.2 4h
26.0 - 28.8
26.0 - 28.8
26.0 - 28.8
26.0 - 28.8
4h charge cycle
restarts if voltage
drops
Charge cycle
restarts if voltage
drops