VMAXTANKS BC1225HD, BC2413HD User Manual

VMAXTANKS™ BC1225HD & BC2413HD

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1. Summary

VMAXTANKS™ HD battery chargers utilize state of the art SMR technology and high-performance micro-processor control, resulting in a light
weight, small volume, long operating time, cost effective charger with a wide scope of applicability. The utilization of high performance
microprocessors gives HD chargers the intelligent control and full protection necessary while in use, including over current prevention, polarity
short-circuit prevention, polarity transposition prevention, disoperation prevention, over voltage prevention, self lock prevention and fast
charging. They further maintain unique functions of ultra-low composite pulse charging, temperature self-compensation and battery
temperature reduction to efficiently protect and prolong the lifespan of the battery in use.
The charger could be utilized for electric forklifts, electric vehicles, electric pallet trucks, golf carts, solar, electric cleaning equipment, UPS
and many other applications.

2. Features:

1. Ultra-low frequency composite pulse charging: Prevents new battery sulphation and removes it from old batteries.

2. Temperature self-compensation: Charging voltage adapts to temperature to prevent over or under battery charging.

3. Automatic Equalized Charging: Charging battery pack in automatic equalized charging as needed to maximize its overall lifespan.

4. Short-Circuit Prevention: Charger will turn off upon detecting a short circuit.

5. Overheat Protection: When the inner temperature of the charger is above 167 ºF, charging current and fan speed are adjusted until
temperature drops to an acceptable level.

6. Reverse Polarity Protection: Charger will disconnect upon detecting reverse polarity, preventing any damage to the charger or to battery.

7. Input low voltage & Overvoltage Protection: Charger will go into protection mode if the input AC voltage is below 90VAC or above 132VAC.

8. Test function：Charger displays charging voltage, current, charging time, and battery state of charge (25% 50% 75% 100% LEDs).

7 STAGE Heavy Duty Fully Automatic Smart Charger User Manual

VMAXTANKS™ BC1225HD & BC2413HD

www.vmaxtanks.com

3. Charger Display

4. Charging Stages:

The VMAXTANKS™ HD chargers offer a fully automatic 7-Stage charging process-Desulphation, Soft Start, Bulk, Absorption, Battery Test,
Recondition and Float- offering a very comprehensive and accurate charging process. This lengthens battery life and improves their
performance.
VMAXTANKS™ HD chargers are suitable for most battery types designed to be charged with 2.45V/Cell including Calcium, Gel and AGM batteries.
They may also help restore drained and sulphated batteries.

Desulphation

The Desulphation stage may break down sulphation that occurs in batteries that have been left flat for extended periods of time, bringing them
back to full charge. Sulphation occurs when lead-sulphate hardens and clogs up the battery cells.

Soft Start

Soft Start is a preliminary charge process that gently introduces power to the battery. This protects the battery and increases battery life. This
stage continues until the battery's terminal current has risen slowly above the set limit of soft start current, at which point the charger switches
to bulk charging.

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 14.5-14.7 volts for 12V charger or 29.0-29.4 volts for 24V
charger.

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 14.7 volts for a 12V
charger or 29.4 volts for a 24V charger 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 recondition function is initiated automatically if the battery fails the battery test (stage 5). Failing the battery test indicates that