LiTime 24V 20A LiFePO4 Battery Charger Instruction Manual

Sarrera

This manual provides detailed instructions for the safe and efficient operation of your LiTime 24V 20A LiFePO4 Battery Charger. Please read this manual thoroughly before using the product and retain it for future reference.

Segurtasun informazio garrantzitsua

Bateragarritasuna: This charger is designed exclusively for 24V (25.6V) LiFePO4 Lithium Batteries. Do not use with other battery types.
Ingurumena: This charger is not waterproof. Do not use in marine environments such as boats, ships, yachts, or with trolling motors. Avoid exposure to water or excessive moisture.
Aireztapena: Ensure the charger is placed in a stable, well-ventilated area during use to prevent overheating. The built-in fan requires clear airflow.
Konexioak: Always ensure battery terminals are tight to prevent overheating or melting. Connect the DC cable to the battery first, then the AC plug to grid power.
Polaritatea: Observe correct polarity when connecting to the battery (Red = Positive, Black = Negative).
Desmihiztatu: Do not disassemble the charger. Disassembly may cause malfunction and void the warranty.
liburukiatage Bateratzea: Kargagailua voltage must match the battery voltage. For adjustable voltage chargers, ensure settings match before connecting.

Precautions for LiTime Battery Chargers — Image: Visual guide to important precautions for using LiTime battery chargers, including correct voltage matching, secure terminal connections, polarity, ventilation, and avoiding disassembly.

Produktuaren Ezaugarriak

29.2V Lithium Battery Charger: Specifically designed for charging 24V (25.6V) Lithium Batteries.
0V Activation Function: Can wake up deeply discharged batteries with triggered BMS cut-off protection.
Teknologia aurreratua: Utilizes LLC half-bridge resonant soft-switching power supply control for compact, lightweight, and portable design.
Segurtasuna eta Fidagarritasuna: CE & RoHS Certificated. Features fully automatic transition of CC, CV, and Float/Cut off.
Barneratutako babesak: Includes Over Temperature, Over Voltage, Short Circuit, and Reverse Polarity protection.
Denbora errealeko jarraipena: LED indicators provide clear status of battery charging.
Diseinu iraunkorra: High-grade aluminum alloy shell for good heat dissipation, with a built-in cooling fan.
Anderson konektorea: Equipped with an Anderson connector for secure and easy connection.

Kutxan dagoena

Contents of the LiTime 24V 20A LiFePO4 Battery Charger package — Image: The package contents include the LiTime 24V 20A LiFePO4 Battery Charger unit, AC cable, DC cable with Anderson connector, installation screws, and a user manual.

LiTime 24V 20A LiFePO4 Battery Charger
AC Cable (47.24 inches)
DC Cable with Anderson Connection Wire (9.84 inches)
Installation Screws (x4)
Installation Bracket (x1)
Erabiltzailearen eskuliburua (dokumentu hau)

Konfigurazioa eta Instalazioa

Kargagailua konektatzea

Ensure the battery is compatible with the charger (24V LiFePO4).
Connect the DC cable (with Anderson connector) to your LiFePO4 battery. Ensure a secure and tight connection to prevent arcing or overheating. Observe correct polarity: Red to Positive (+), Black to Negative (-).
Plug the AC cable into the charger's AC port.
Plug the AC power cord into a standard 100-240V, 50/60Hz wall outlet.

Diagram showing how to connect the LiTime 24V 20A LiFePO4 Battery Charger — Image: Step-by-step visual guide on connecting the charger: 1. Connect DC cable to battery. 2. Connect Anderson connector. 3. Plug AC into grid power.

Kargagailua muntatzea

The charger features mounting holes and an installation bracket for secure placement. Use the provided screws to mount the charger to a stable surface in a well-ventilated area. Ensure adequate space around the charger for airflow, especially around the cooling fan.

LiTime 24V 20A LiFePO4 Battery Charger showing mounting features — Image: The charger's design highlighting the handle, AC port, mounting holes, and mounting bracket for installation.

Funtzionamendu-argibideak

Charging Process (3 Stages with BMS Activation)

The LiTime charger employs a smart 3-stage charging process to optimize battery life and performance, including a 0V activation function for deeply discharged batteries.

T1: Pre-Charge Stage: If the battery is deeply discharged (e.g., below 18V for a 24V battery), the charger will initiate a pre-charge stage. It charges the battery at a limited current to safely activate it and bring its voltage to a normal level. This stage is crucial for batteries that have entered BMS cut-off protection.
T2: Constant Current Charging Stage: Behin bateria boltage is within a safe range, the charger delivers a constant 20A current, rapidly charging the battery.
T3: Constant Voltage S kargatzentage: As the battery approaches full charge, the charger maintains a constant voltage (29.2V) while gradually decreasing the current until the battery is fully charged.

3-ak ilustratzen dituen diagramatage charging process of the LiTime LiFePO4 charger — Image: A graph showing the voltage and current curves over time during the three charging stages (Pre-Charge, Constant Current, Constant Voltage) with BMS activation.

LED adierazleen esanahia

The charger features LED indicators to provide real-time status updates:

Gorri trinkoa: Bateria kargatzen ari da.
Berde trinkoa: Bateria guztiz kargatuta dago.
Berde keinukaria: Charger is on standby.
Gorri keinukaria: Charger fault or under protection.

Close-up of the LED indicator lights on the LiTime charger — Irudia: Xehetasun zehatza view of the LED indicator panel, showing the meanings of solid red (charging), solid green (fully charged), flashing green (standby), and flashing red (fault/protection).

0V Activation Function

If your LiFePO4 battery's Battery Management System (BMS) has triggered its cut-off protection due to deep discharge, this charger can activate it. The charger will send a gentle current to safely raise the battery's voltage above the BMS cut-off threshold, allowing it to resume normal charging.

LiTime 24V 20A LiFePO4 Battery Charger activating a battery — Image: The LiTime 24V 20A LiFePO4 Battery Charger connected to a 24V 100Ah battery, illustrating its capability to activate the battery after BMS protection with 29.2V DC output voltage and 20A output current.

Video: This video demonstrates how to revive a LiFePO4 battery that has stopped working or won't charge, often due to BMS protection. It shows steps like disconnecting devices, letting the battery rest, and using a charger with an activation function. It also explains voltage thresholds for 12V and 24V batteries.

Video: This video explains the internal processes of a LiFePO4 charger during its 3-stage charging cycle: pre-charge, constant current, and constant voltage. It highlights how the charger safely raises voltage, delivers full power, and then steadily reduces current to protect battery cells and ensure full absorption of energy.

Mantentzea

Garbiketa: Kargagailua garbi eta hautsik eta hondakinik gabe mantendu. Erabili zapi lehor eta leun bat garbitzeko. Ez erabili garbitzaile likidorik.
Biltegiratzea: Store the charger in a cool, dry, and well-ventilated area when not in use.
Kableen ikuskapena: Regularly inspect the AC and DC cables for any signs of damage, fraying, or loose connections. Replace damaged cables immediately.
Aireztapena: Ensure the cooling fan is not obstructed during operation. Periodically check for dust buildup in the fan area.

Arazoak konpontzea

Charger Won't Start or Battery Won't Charge

If your charger is not initiating a charge or your battery is not responding, consider the following:

Egiaztatu konexioak: Ensure all connections (AC power, DC to battery) are secure and correctly polarized.
Bateria Voltage: If your 24V battery's voltage is below 18V, its BMS might have activated protection. The LiTime charger has a 0V activation function to revive such batteries. Follow the steps in the "0V Activation Function" section.
Kanpoko gailuak: If an inverter or other device is plugged into the battery, it might block the charger's initial "wake-up" pulse.
- Unplug the inverter from the battery.
- Let the charger activate the battery.
- Reconnect the inverter after charging is complete.
Charger Fault: If the LED indicator is flashing red, there might be a charger fault or it's under protection (e.g., over-temperature, short circuit). Disconnect the charger, allow it to cool, and re-attempt connection. If the fault persists, contact customer service.

Troubleshooting guide for a charger that won't start due to an inverter — Image: A three-step visual guide demonstrating how to troubleshoot a charger that won't start when an inverter is connected: 1. Unplug the inverter. 2. Activate the battery with the charger. 3. Reconnect the inverter after charging.

Zehaztapenak

Ezaugarri	Xehetasuna
Marka	LiTime
Eredua	24V 20A LiFePO4 bateria-kargagailua
Produktuaren neurriak	10.87 x 4.75 x 3.52 hazbete
Elementuaren pisua	6.25 kilo
Irteera boltage	29.2 Volt
Irteera Korrontea	20 Amps
Sarrera boltage	100-240V AC, 50/60Hz
Kolorea	Beltza
Ziurtagiriak	CE, RoHS, FCC

Bermea eta Laguntza

LiTime provides a 2 urteko kalitate-bermea for this charger. For any technical support or customer service inquiries, please contact LiTime customer service. They offer professional technical support and online services with quick feedback within 24 hours.

You can find more information and contact details on the official LiTime webgunea: www.litime.com

LiTime 24V 20A