GT POWER V5 - User Manual

BALANCE CHARGER FOR
NICD/NIMH/LITHIUM/PB BATTERIES
G.T. POWER V5
Thank you for purchasing
G .T. Power V5 Charger.
This is
a rapid charger
with build-in balancer,
computerised with microprocessor and specialised
operating software. Please read this entire operating
manual
completely and attentively
before using.

Summary

Charger Features and Specifications

Individual Cell Voltage Balancer

Built-in balancer for lithium batteries, eliminating the need for a separate device.

Maximum Safety Features

Includes Delta-peak sensitivity, capacity, temperature, and time limits for safe operation.

Input Power Monitor

Monitors input voltage to protect the car battery from damage during charging.

High-Power Performance

Offers 50W output power, capable of charging NiCd/NiMH and LiPo batteries.

Exterior Unit Overview

Component Identification and Connections

Details input/output ports, LCD screen, and sensor connections on the charger.

Control Panel Operations

Explains functions of buttons for value adjustment and process control.

Power and Sensor Systems

Describes the power supply connections and the temperature sensor system.

Safety Warnings and Precautions

General Safety Guidelines

Covers unattended operation, environment, power source, and flammable materials.

Battery Handling and Charging

Details correct battery selection, connection, and charging practices.

Important Pre-Charge Checks

Emphasizes checking battery type, connections, and cell configuration before charging.

Initial Parameter Setup

Temperature Cut-off Setting

Allows setting a temperature limit to stop charging, with default 20C.

Safety Timer Setting

Sets a maximum charge time to prevent overcharging, default 10min.

Capacity Cut-off Setting

Sets maximum charge capacity, defaulting to 5000mAh.

Key Beep and Buzzer Configuration

Configures audible feedback for button presses and alerts.

Charge Programs

Lithium Polymer Battery Program

Program for 3.7V/cell LiPo batteries, emphasizing correct current, voltage, and cell count.

LiPoly Balancing Charge Mode

For balancing LiPo battery voltages by monitoring individual cell voltages during charge.

NiMH;NiCd Battery Charging

Program for NiMH and NiCd batteries, covering charge current settings from 0.1A to 5A.

Pb (Lead-Acid) Battery Charging

Program for lead-acid batteries, with specific current and voltage settings for safe charging.

Warning and Error Messages

Connection and Polarity Errors

Covers reversed polarity, connection breaks, and output short-circuits.

Input and Battery Voltage Errors

Addresses low input voltage and incorrect lithium battery voltage selection.

Unit Malfunction and Battery Checks

Indicates general unit failure and detects voltage differences during battery checks.

Overview

1. Function Description
2. Important Technical Specifications
3. Usage Features
4. Maintenance Features
5. Warnings and Safety Notes
6. Warranty and Service

The G.T. Power V5 is a versatile balance charger designed for various battery types, including NiCd, NiMH, Lithium (LiPo/Li-Ion), and Pb (lead-acid) batteries. It features a built-in balancer for lithium batteries, eliminating the need for a separate balancing unit during charging. The charger is microprocessor-controlled and utilizes specialized operating software for precise and safe charging.

Function Description:

The G.T. Power V5 is primarily a rapid charger with an integrated individual-cell-voltage balancer for lithium batteries. It supports charging of NiCd/NiMH batteries (1-14 cells), Li-Ion/Polymer batteries (1-5 series), and Pb batteries (2-12V). The device incorporates several safety features to protect both the battery and the charger itself.

Important Technical Specifications:

• Operating voltage range: 10.0~18.0 V
• Circuit power: max. 50W
• Charge current range: 0.1~5.0A
• Current drain for balancing LiPo: 200mAh/cell
• NiCd/NiMH battery cell count: 1~14 cells
• Li-Ion/Polymer cell count: 1~5 Series
• Pb battery voltage: 2 to 12V
• Weight: 360g
• Dimensions: 130×98×30 mm

Usage Features:

• Individual Cell Voltage Balancer: Built-in balancer for LiPo batteries ensures balanced charging without external equipment.
• Delta-Peak Sensitivity: Automatic charge termination based on Delta-peak voltage detection for NiCd/NiMH batteries, ensuring safe charging.
• Capacity Limit: Allows users to set a maximum charging capacity. If this limit is exceeded, the charging process terminates automatically.
• Temperature Limit (with optional thermal probe): Users can set a maximum temperature for the battery. If the battery reaches this temperature during charging, the process is forcibly terminated to prevent damage.
• Processing Time Limit: A configurable maximum process time helps prevent defects by stopping the charge if it runs too long.
• Input Power Monitor: Monitors the input voltage from the power source (e.g., car battery) and automatically terminates the process if the voltage drops below a set limit, protecting the input battery.
• High Power and Performance Circuit: Capable of charging up to 14 NiCd/NiMH cells and 5 series of LiPo batteries with a maximum current of 5.0A.
• LCD Screen: A 16-character, 2-line LCD screen displays program settings and real-time charging information.
• User Interface: Features "Start/Enter," "Stop/Batt type," "DEC," and "INC" buttons for navigation, setting parameters, and controlling charge processes.
• Adjustable Backlight: The brightness of the LCD screen can be adjusted.
• Beep/Buzzer Sound: Audible alerts for button presses and mode changes, which can be turned on or off.
• Multifunctional Connectors: Includes crocodile clips for direct DC battery connection and an 11-18V socket for a mains power adapter.
• Balance Lead Sockets: Dedicated ports for connecting individual cell connectors of LiPo batteries for balancing.
• Program Flow Chart: A clear flow chart guides users through different charging programs (LiPoly, LiPoly Balance, NiMH, NiCd, Pb) and user settings (Temperature cut-off, Safety timer limit, Capacity cut-off, Back-light, Input voltage Low cut-off, Beep/Buzzer sound).
• LiPoly Charging Modes: Supports standard Li-Ion/Poly charging and LiPoly balancing charging, where the charger monitors and normalizes individual cell voltages.
• Individual Cell Voltage Inquiry: During balancing mode, users can monitor the voltage of individual cells by pressing the DEC or INC buttons.
• NiMH/NiCd Charging: Simple current-based charging for NiMH/NiCd batteries, with a current range of 0.1A to 5A.
• Pb (Lead-Sulphuric Acid) Charging: Designed for 2V-12V Pb batteries, with charge current recommendations (1/10 of capacity) and voltage matching.

Maintenance Features:

• Protective and Monitoring System: The charger incorporates various functions to verify its electronics and display error messages with audible sounds in case of malfunction.
• Error Messages: Provides clear on-screen messages for issues such as:
  • Reversed polarity: Incorrect battery connection.
  • Connection break: Interruption in battery connection.
  • SHOT ERR: Short-circuit at output.
  • IN Voltage ERR: Input power voltage below limit.
  • VOL SELECT ERR: Incorrect Lithium battery pack voltage selection.
  • BREAK DOWN: Malfunction in the unit.
  • BATTERY CHECK LOW VOLTAGE / OVER VOLTAGE: Voltage difference detected during charging.
  • BATTERY VOL ERR: One cell in LiPoly pack over voltage limit.

Warnings and Safety Notes:

The manual emphasizes critical safety precautions:

• Never leave the charger unsupervised while connected to power.
• Keep the unit away from dust, damp, rain, heat, direct sunshine, and vibration.
• The unit is designed for 12V DC power only.
• Always place the unit and battery on a heat-resistant, non-inflammable, and non-conductive surface.
• Understand battery information accurately to avoid damage, fire, or explosion, especially with Lithium batteries.
• Connect charge cable to the unit first, then to the battery; reverse the sequence when disconnecting to avoid short-circuits.
• Do not connect more than one battery pack at a time.
• Do not charge specific battery types: mixed cell types, fully charged/slightly discharged, non-rechargeable, those requiring different charge techniques, faulty/damaged, those with integral charge/protection circuits, or those installed in devices.
• Always check program selection, current settings, battery pack composition (for Lithium), and connection firmness before charging.
• Failure to follow instructions can lead to severe damage to the charger and battery, fire, injury, or property loss.

Warranty and Service:

The product comes with a one-year (12 months) warranty from the purchase date, covering material or operational defects present at the time of purchase. Proof of purchase (invoice or receipt) is required for service. The warranty does not cover damage due to wear, overloading, incompetent handling, or use of incorrect accessories.

GT POWER V5 Specifications

General

Brand	GT POWER
Model	V5
Category	Battery Charger
Language	English