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7-Stages Automatic battery charger MCU controlled&high frequentcy switchmode
7-STAGE AUTOMATIC CHARGING
This is a fully automatic battery charger with 7 charge stages.
Automatic charging protects your battery from being overcharged. So you can
leave the charger connected to the battery indefinitely.
7-stage charging is a very comprehensive and accurate charging process that
gives your battery longer life and better performance compared to using
traditional chargers.
7-stage chargers are suitable for most battery types including Calcium, Gel and
AGM batteries. They may also help restore drained and sulphated batteries.

The 7 stages are:
Desulphation ; Soft Start; Bulk; Absorption; Battery Test; Recondition and Float
Desulphation
The Desulphation stage may break down sulphation that occurs in batteries that
have been left flat for extended periods of time, returning them back to full charge.
sulphation occurs when lead-sulphate hardens and clogs up the battery cells.
Soft Start
A preliminary charge processes that gently introduces power to the battery. This
protects the battery and increases battery life.
Bulk (Constant Current)
Bulk mode charges the battery at the maximum rate (constant current) putting a
large amount of power into the battery in a short amount of time. This stage will
charge the battery to approximately 80%, until the voltage reaches 14.4 volts for
12V charger or 28.8 volts for 24V charger.
Bulk mode for the charging cycle. The start phase continues until the battery's
terminal voltage has risen above the set limit, at which point the charger
switches to bulk charging. If the terminal voltage has not passed the voltage
limit within the time limit, the charger switches to fault mode (lamp ③ solid) and
discontinues the charging. If so, the battery is faulty or its capacity is too large.
Absorption (Constant Voltage)
The charge rate slows down so the battery can absorb more power and reach
100% charge. The voltage remains at a constant 14.4 volts for 12V charger or
28.8 volts for 24V charge while the current is gradually reduced until no more
power can be added without over-charging the battery.
Battery Test
An automatic battery test is conducted immediately after the absorption stage.
The test monitors the voltage for 90 seconds to determine if the charge was
successful.
◆12V charger If the voltage is below 13.2 volts (fail), the charger will initiate the
Recondition stage.
◆12V charger If the voltage is above 13.2 volts (pass), the charger will proceed
to the final stage: Float.
◆24V charger If the voltage is below 26.4 volts (fail), the charger will initiate the
Recondition stage.
◆24V charger If the voltage is above 26.4 volts (pass), the charger will proceed
to the final stage: Float.
Recondition
The battery reconditioning function is initiated automatically in the case that the
battery fails the battery test (stage 5). Failing the battery test indicates that the
absorption stage was unable to fully charge the battery. The recondition mode
will then begin to introduce a low constant current for a period of 4 hours. Then
the charger will go into float charging mode.
This recondition stage can recover batteries from a deeply discharged state
increasing performance and battery life.
RECOND- This mode is used to recover deep discharged flooded batteries
where you could expect a stratified acid (high acid weight in the bottom, low on
top). Check with battery manufacturer when in doubt. Use this mode with care,
because the high voltage will cause some water loss. 16V/32V is normally no
problem for electronics in 12V/24V system. Consult your supplier when in
doubt. Life of light bulbs will be reduced at higher voltage. Try to disconnect
light from the battery during this phase. Maximum effect and minimum risk for
electronics is achieved by charging a disconnected battery.
Float
The Float stage maintains the battery at 100% charge without overcharging or
damaging the battery. This means the charger can be left connected to the
battery indefinitely.
The battery charger has an 7-step fully automatic charging cycle. the cycle is
repeated infinitely. If the terminal voltage drops below a lower limit, the charger
automatically goes back to the beginning of the charging curve.

SWITCHMODE TECHNOLOGY
Using the latest technology in battery chargers, switch mode chargers convert
110V/220-240V AC power to 12V/24V DC power using electronic components
unlike traditional battery chargers that rely on heavy transformers. This allows
the charger to be light weight and compact without sacrificing on performance.
PROTECTIVE FEATURES
POLARITY PROTECTION
Prevents the output leads from sparking due to accidental reverse connection
or short circuit, making the charger safer to use around batteries.
OUTPUT SHORT PROTECTION
Short circuit connection of the clips: Check clips are not touching each other
OR Check the clips are correctly connected to the battery.
NON BATTERY LINK PROTECTION
BIf battery charger connects with non battery load,it will go into protection state.
FAULTY BATTERY
Bulk charging has timed out and stopped after 24 hours. Battery is faulty and
may need to be replaced
OVER VOLTAGE PROTECTION
The 12V charger will automatically protection if the voltage is higher than 17.5V.
The 24V charger will automatically protection if the voltage is higher than 35V.
OVER TEMPERATURE PROTECTION
Internal temperature is above 65 degree+/-5degree
COOLING FAN
The charger is fitted with a thermostatically controlled fan to cool onboard
electronics and maintain charging performance. The cooling fan will engage
automatically when there is a high load on the battery or there is sufficient heat
build up.

7-stage chargers are designed for indoor, out of weather use only. Ensure that
both charger and battery are in a well-ventilated space during charging.
The battery charger end plates include a mounting flange for easy mounting.
If permanently fixed the charger should be mounted to a suitable horizontal or
vertical panel, with at least 10cm clearance from the end plates to
provide adequate ventilation for the cooling fan.
Connection:
the battery terminals. (DO NOT extend the battery charger DC cables, as the
added voltage drop will cause incorrect charging).
battery post.
Product selected:
P/No. | EPA1210 | EPA1215 | EPA1220 | EPA2410 | |||
Charger type | 7-Stage automatic | 7-Stage automatic | 7-Stage automatic | 7-Stage automatic | |||
Input voltage | 220-240V~, 50/60Hz 110V~, 50/60Hz | 220-240V~, Hz 110V~, 600Hz | 220-240V~, Hz 110V~, 600Hz | 220-240V~, Hz 110V~, 600Hz | |||
Output power | 147W | 220W | 294W | 294W | |||
Output | 12V 10A | 12V 15A | 12V 20A | 24V 10A | |||
Suit battery | 12V 30-240Ah | 12V 45-360Ah | 12V 60-480Ah | 24V 30-240Ah | |||



The Service We Provide - We Take Care Of Your Order
Punctual delivery time:
• We put your order into our tight production schedule, ensure your punctual delivery time.
• Production / inspection report before your order packed
• Shipping notice/ insurance to you as soon as your order is shipped.
After sales service:
Professional sales:
•We value every inquiry sent to us, ensure quick competitive offer.
•We cooperate with customer to bid tenders. Provide all necessary document.
•We are a sales team, with all technical support from engineer team.
1.We are factory and trading company since 1999, 16years experience and professional.
2.Hot selling around the world,many customers prefect items excellent performance.
3.3 sales teams and 5 QC and after-service teams.Best to You.
4.Excellent quality,competitive prices.
5.Choose us because of your wisdom.

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