AiLi TK15 - User Manual

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Battery Capacity Monitor
— Instruction (English version) —
This is a typical high precision current type battery capacity
monitor (also known as coulometer), designed to test the voltage，
current and capacity of a battery to help users know the state of a
battery in real time. This device has a memory function. It is
suitable for mobile and portable equipment using battery power
e.g. RV's, Marine, Mobility Vehicles, Remote Power, Instruments,
UPS etc..
This product is suitable for Lithium battery, Lithium Iron
Phosphate battery (LiFePO4), Lead-Acid battery and Nickel Metal
Hydride battery with a working voltage from 8V to 100V.
Parameter
Min
Type
Max
Unit
Voltage range
8.0
100.0
V
Power consumption
10.0
12.0
mA
Standby consumption
0.5
0.6
mA
Sleep consumption
50
60
uA
Voltage accuracy
±1.0
％
Current accuracy
±1.0
%
Capacity accuracy
±1.0
%
Parameter
Min
Type
Max
Unit
Capacity range
1.0
999
Ah
Current range (50A)
0.0
50.0
75.0
A
Current range (100A)
0.0
100.0
200.0
A
Current range (350A)
0.0
350.0
500.0
A
Temperature range
0
20
35
℃
Backlight on current
50/100/150
mA
Backlight off current
30/80/110
mA
Weight
200/270/410
g
Meter size
ø59 (diameter)*20 (depth)
mm
Panel Cut-out
ø54.50 (diameter)
mm
Normal Operation:
 Press key to voltage interface.
 Press key to capacity interface.
 press key again to current interface.
 Press key to capacity percentage interface.
１． First, connect the current sampler/shunt in series with
negative pole of battery, the B- terminal on the shunt connects to
the Battery - (neg) terminal. P- on the shunt connects to power
output/charger - .
2．You require a standard insulated wire (0.3-0.75mm²). One end
of the standard wire connects to the Battery + (Pos) terminal and
the another end connects to any one of B+ on the current shunt.
3．Finally, connect the shunt to the Coulometer display using the
shielded wire/ cable (Supplied with Coulometer).
(1) Connection diagram of 50A current sampler
(2) Connection diagram of 100A/350A shunt
4． Connect and check the reading. Complete the connection as
shown and power on, the screen should display the battery
voltage current, capacity percentage and other information. If the
screen does not display, then please check the wire connections.
Next step, run a charge or discharge and check display current is
consistent with actual current. If the difference is large please
check the connections.
Attention: **IMPORTANT** Please connect as illustrated. The
shunt must be connected to the negative circuit，it must not be
connected to the positive circuit. If you wish to extend the
shielded wire, you must use the same cable/wire specification.

Summary

Product Overview and Application

Technical Specifications and Display

Basic Parameters

Details key parameters like voltage range, power consumption, and accuracy.

Monitor Display Description

Explains the symbols and values shown on the battery monitor display.

Installation and Initial Setup

Installation

Guide on cutting the panel opening and mounting the coulometer.

Set Rated Capacity

Procedure to set the battery's rated capacity in Amp-hours.

Capacity Initialization

Steps to initialize capacity by full charge or discharge.

Preset Voltage Setting

Configure voltage for automatic zero resetting of capacity.

Product Operation and Warnings

Product Operation

Describes how the monitor functions during charging/discharging.

Warning and Warranty

Important safety and environmental warnings for the monitor.

Overview

1. Technical Specifications
2. Usage Features
3. Installation
4. Connection
5. Initial Setup
6. Normal Operation
7. Product Operation
8. Maintenance Features
9. Warning & Warranty

This document describes a high-precision current-type battery capacity monitor, also known as a coulometer, designed to test the voltage, current, and capacity of a battery in real time. It helps users understand the battery's state and features a memory function. The device is suitable for mobile and portable equipment powered by batteries, such as RVs, marine vehicles, mobility vehicles, remote power systems, instruments, and UPS.

Technical Specifications:

The monitor supports a wide range of battery types, including Lithium, Lithium Iron Phosphate (LiFePO4), Lead-Acid, and Nickel Metal Hydride batteries, with a working voltage from 8V to 100V.

• Capacity Range: 1.0 to 999 Ah
• Current Ranges:
  • 50A: 0.0 to 50.0 A (max 75.0 A)
  • 100A: 0.0 to 100.0 A (max 200.0 A)
  • 350A: 0.0 to 350.0 A (max 500.0 A)
• Temperature Range: 0 to 35 °C (typical 20 °C)
• Backlight On Current: 50/100/150 mA (depending on current range)
• Backlight Off Current: 30/80/110 mA (depending on current range)
• Weight: 200/270/410 g (depending on current range)
• Meter Size: Ø59 mm (diameter) * 20 mm (depth)
• Panel Cut-out: Ø54.50 mm (diameter)
• Power Consumption:
  • Normal: 10.0 to 12.0 mA
  • Standby: 0.5 to 0.6 mA
  • Sleep: 50 to 60 uA
• Accuracy:
  • Voltage: ±1.0 %
  • Current: ±1.0 %
  • Capacity: ±1.0 %

Usage Features:

The device displays various parameters, including present voltage (V), present current (A), present capacity (Ah), and capacity percentage. The display includes a battery symbol, charge indicator, and discharge indicator.

Installation:

1. Cut a round opening of Ø54.50mm in the panel.
2. Insert the coulometer from the front and fix it with the provided bracket.

Connection:

The monitor requires careful wiring to ensure accurate readings.

1. Connect the current sampler/shunt in series with the negative pole of the battery. The B- terminal on the shunt connects to the battery's negative terminal, and P- on the shunt connects to the power output/charger negative.
2. Use a standard insulated wire (0.3-0.75mm²) to connect one end to the battery's positive terminal and the other end to any B+ terminal on the current shunt.
3. Connect the shunt to the coulometer display using the shielded wire/cable supplied with the coulometer.

Important Connection Note: The shunt must be connected to the negative circuit, not the positive. If extending the shielded wire, use the same cable/wire specification.

Initial Setup:

1. Set Rated Capacity:

   • Determine the battery's rated capacity in Amp-hours (e.g., 100 Ah). If unknown, contact the manufacturer or measure it using the meter itself.
   • To set, press the SET key to enter the capacity reading interface, then hold the SET key for 3 seconds to enter capacity setting mode. Use the A/Ah or % keys to adjust the value, then press SET to confirm.
   • Measuring Actual Capacity: If the rated capacity doesn't match the actual capacity, set the rated capacity as high as possible (e.g., 100Ah). Discharge the battery completely, then press SET to enter the percentage reading interface and hold SET for 3 seconds to set the capacity to zero. Fully charge the battery; the displayed capacity will then be the actual capacity. Finally, set the rated capacity to this displayed value.

2. Capacity Initialization:

   • Upon first use, the displayed percentage and capacity may not be accurate. To initialize, fully charge the battery, press SET to enter the percentage reading interface, and hold SET for 3 seconds to set the capacity to full. Alternatively, fully discharge the battery and hold SET for 3 seconds to set capacity to zero. This calibration is only needed if the battery is replaced.

3. Preset Voltage Setting (Capacity Automatic Zero Resetting):

   • Press SET to enter the voltage reading interface, then press A/Ah for 3 seconds to enter the zero capacity voltage setting interface. Click A/Ah or % to adjust the value, then press SET to confirm. When the voltage drops below this preset value, the Ah and percentage readings will reset to 0, and the backlight will turn off.
   • Note: This setting is optional. The default is 0V (invalid/not set). Ensure you understand the battery's charge and discharge voltages before setting this value.

Normal Operation:

• Press A/Ah to cycle through voltage, capacity, current, and capacity percentage interfaces.

Product Operation:

1. The coulometer must be operational during charging or discharging for accurate capacity display.
2. When a load is connected and the discharge current exceeds the "back-light on current," the display backlight will turn on (if blinking, B- and P- are inversely connected, indicating discharge).
3. When a charger is connected and the charge current exceeds the "back-light on current," the backlight will blink (if solidly on, B- and P- are inversely connected, indicating charge).
4. If the charge or discharge current drops below the "back-light off current," the coulometer enters a low-power state, and the backlight turns off. The coulometer will remember the capacity.
5. Due to high sensitivity, if the coulometer is in standby mode (no input/output current) and is affected by electromagnetic radiation (e.g., from inductive loads like electric motors), the backlight may briefly turn on.
6. Frequent drastic changes in current can lead to data acquisition errors and affect accuracy.

Maintenance Features:

The device has a memory function, retaining capacity information even when powered off.

Warning & Warranty:

• The monitor should not be exposed to direct sunlight for long periods or to environments with high ultraviolet radiation, especially in extreme temperatures (below -20°C or above 60°C), as this can shorten the life of the LCD display.
• AiLi® provides a 12-month warranty for all AiLi® branded Battery Capacity Monitors sold by AiLi® or its authorized dealers/distributors worldwide, starting from the date of purchase. For further warranty details, refer to the AiLi® website.

AiLi TK15 Specifications

General

Brand	AiLi
Model	TK15
Category	Monitor
Language	English