1. Úvod
The JSDSOLAR 24V 20A LiFePO4 Battery Charger is specifically engineered for efficient and safe charging of 25.6V LiFePO4 deep cycle rechargeable batteries. This manual provides essential information for proper setup, operation, and maintenance to ensure optimal performance and longevity of your battery and charger.

Image 1.1: JSDSOLAR 24V 20A LiFePO4 Battery Charger. This image displays the main charger unit, its attached alligator clips for battery connection, and the AC power cord.
2. Bezpečnostní pokyny
Před použitím nabíječky si prosím přečtěte a pochopte všechny bezpečnostní pokyny. Nedodržení těchto pokynů může vést k úrazu elektrickým proudem, požáru nebo vážnému zranění.
- This charger is designed exclusively for 25.6V LiFePO4 baterie. Do not attempt to charge other battery types (e.g., lead-acid, Ni-Cd, Ni-MH) as this may cause damage to the charger, battery, or personal injury.
- Ensure proper ventilation during charging. Do not cover the charger or operate it in an enclosed space.
- Avoid contact with water, moisture, or flammable materials.
- Uchovávejte nabíječku a baterii mimo dosah dětí a domácích zvířat.
- Nabíječku nerozebírejte, neupravujte ani se nepokoušejte o opravu. Veškerý servis svěřte kvalifikovanému personálu.
- Always connect the charger to the battery before plugging it into the AC power source. Disconnect from AC power before disconnecting from the battery.
- Verify correct polarity (+ to + and - to -) when connecting the alligator clips to the battery terminals. Reverse polarity connection protection is built-in, but incorrect connection should still be avoided.
- The charger features multiple protection mechanisms including over-temperature, output short-circuit, reverse polarity, and output over-voltage ochrana.

Image 2.1: Reliable Safety Protections. This graphic highlights the charger's built-in safety features: output over-voltage protection, temperature protection, output short-circuit protection, and reverse polarity connection protection.
3. Obsah balení
Po obdržení zkontrolujte prosím obsah balíku, abyste se ujistili, že jsou všechny položky přítomny a nepoškozené:
- JSDSOLAR 24V 20A LiFePO4 Battery Charger Unit
- AC napájecí kabel
- Uživatelská příručka (tento dokument)

Image 3.1: What's in the Box. This image shows the JSDSOLAR 24V 20A LiFePO4 Battery Charger, its AC power cord, and the included user manual.
4. Konec produktuview
4.1 Vlastnosti
- Dedicated LiFePO4 Charging: Specifically designed for 25.6V LiFePO4 batteries.
- Advanced Charging Algorithm: Používá 2-kytage Konstantní proud/Konstantní objemtage (CC/CV) charge algorithm for efficient and safe charging.
- Inteligentní LED indikátory: Provides clear feedback on charging status and diagnostic information.
- Funkce předběžného nabíjení: Activates Battery Management Systems (BMS) in LiFePO4 batteries, allowing charging to start even from 0V.
- Vysoká účinnost: Delivers a constant current of 20A and a constant voltage of 29.2V for rapid charging.
- Robustní ochrana: Includes over-temperature, output short-circuit, reverse polarity, and output over-voltage ochrana.
- Odolná konstrukce: Made from aluminum alloy with surface oxidation treatment for high hardness and oxidation resistance.
- Integrované chlazení: Features a built-in cooling fan to maintain optimal operating temperature.

Image 4.1: Three Charging Stages. This diagram illustrates the charger's 3-stage charging process: T1 (Pre-Charge) for activating protected batteries, T2 (Constant Current) for fast charging at 20A, and T3 (Constant Voltage) where current is gradually reduced to prevent overcharging.
4.2 Komponenty
- Nabíjecí jednotka: The main body housing the charging circuitry and cooling fan.
- AC vstupní port: Pro připojení napájecího kabelu.
- DC Output Cables: Permanently attached cables with red (+) and black (-) alligator clips for connecting to the battery.
- LED indikátory: Located on the charger unit to display operational status.

Image 4.2: Charger Components. This image provides a detailed view of the charger, highlighting the LED indicators on the side and the robust alligator clips for battery connection.
5. Nastavení
Follow these steps to set up your JSDSOLAR LiFePO4 Battery Charger:
- Připravte si baterii: Ensure your LiFePO4 battery is clean and its terminals are free from corrosion.
- Připojení k baterii: Připojte red (+) alligator clip from the charger to the kladný (+) pól of your battery. Connect the black (-) alligator clip from the charger to the záporný (-) terminál of your battery. Ensure a secure connection.
- Připojení k napájení ze sítě: Plug the AC power cord into the charger's input port, then plug the other end of the AC power cord into a standard 100-240V AC wall outlet.
- Verify BMS Compatibility: Ensure your battery has a Battery Management System (BMS) with a minimum 20A rating to safely handle the charger's output.

Image 5.1: Easy Operating Steps. This graphic illustrates the simple three-step process for connecting the charger: first, attach alligator clips to the battery; second, plug the charger into an AC outlet; and third, observe the LED indicators for charging status.
6. Návod k obsluze
Once the charger is properly connected to both the battery and the AC power source, it will automatically begin the charging process. The intelligent LED indicators will provide real-time feedback on the charging status.
- The charger will automatically detect the battery and initiate the appropriate charging stage, including the Pre-Charge function if the battery's BMS needs activation.
- The charging process will continue until the battery reaches full capacity, at which point the charger will automatically cease charging to prevent overcharging.
- Always disconnect the AC power cord from the wall outlet first, then disconnect the alligator clips from the battery terminals when charging is complete or if you need to interrupt the process.
7. LED indikátory
The charger is equipped with an LED indicator to communicate its operational status:
| Stav LED | Význam |
|---|---|
| Modrá (blikající) | Charging (Normal operation) |
| Zelená (plná) | Charged (Battery full) |
| Červená (blikající) | Fault (Under protection, e.g., over-temperature, short-circuit, reverse polarity) |
| Zelená (bliká) | Not Connected (Standby mode, waiting for battery connection) |
8. Údržba
Správná údržba zajišťuje dlouhou životnost a spolehlivý provoz vaší nabíječky:
- Čištění: Keep the charger unit clean and dry. Use a soft, dry cloth to wipe away dust or debris. Do not use liquid cleaners.
- Skladování: Pokud nabíječku nepoužíváte, skladujte ji na chladném a suchém místě, mimo dosah přímého slunečního záření a extrémních teplot.
- Kontrola kabelů: Regularly inspect the AC power cord and DC output cables, including the alligator clips, for any signs of damage, fraying, or loose connections. Replace if damaged.
- Větrání: Ensure the built-in cooling fan and ventilation openings are free from obstructions to allow for proper airflow.
9. Řešení problémů
If you encounter issues with your charger, refer to the following troubleshooting guide:
| Problém | Možná příčina | Řešení |
|---|---|---|
| Nabíječka se nezapíná / LED dioda nesvítí | No AC power; Faulty AC cord; Internal fault. | Check AC power outlet and connections. Try a different outlet. Inspect AC cord for damage. If problem persists, contact support. |
| Battery not charging / LED flashing Red | Incorrect battery connection (reverse polarity); Battery type incompatibility; Battery BMS in protection mode; Short circuit. | Verify correct polarity of alligator clips. Ensure battery is 25.6V LiFePO4. Disconnect and reconnect battery to reset BMS. Check for short circuits in wiring. |
| Charger feels excessively hot | Poor ventilation; Overload; Internal fault. | Ensure charger is in a well-ventilated area. Clear any obstructions from the cooling fan. If overheating persists, disconnect immediately and contact support. |
| Nabíjení trvá déle, než se očekávalo | Battery capacity larger than expected; Battery deeply discharged; Environmental factors. | Refer to battery specifications for expected charging times. Ensure charger is operating in optimal conditions. |
10. Specifikace
Detailed technical specifications for the JSDSOLAR 24V 20A LiFePO4 Battery Charger:
- Model: 24V 20A
- Vstupní objemtage: 100-240V AC, 50/60Hz, 8A Max
- Výstupní objemtage: 29.2V DC
- Výstupní proud: 20A
- Maximální výstupní výkon: 584W
- Určeno pro: 25.6V LiFePO4 baterie
- Algoritmus nabíjení: 2-stage CC/CV with Pre-Charge function
- Ochranné vlastnosti: Over-temperature, Output Short-Circuit, Reverse Polarity, Output Over-Voltage
- Rozměry produktu: 10.35" (L) x 7.2" (W) x 2.28" (H) (26.3cm x 18.3cm x 5.8cm)
- Hmotnost položky: 3.63 libry (1.65 kg)
- Materiál pouzdra: Hliníková slitina

Image 10.1: Charger Specifications. This image displays the charger connected to a battery, with key specifications highlighted: Output Voltage 29.2V, Output Current 20A, and the physical dimensions of the charger (L 8.46in, W 3.94in, H 2.13in).
11. Záruka a podpora
The JSDSOLAR 24V 20A LiFePO4 Battery Charger comes with a 2-letá záruka od data nákupu, která se vztahuje na vady materiálu a zpracování při běžném používání.
For technical support, warranty claims, or any questions regarding your product, please contact JSDSOLAR customer service through the retailer where the product was purchased or visit the official JSDSOLAR webstránky pro kontaktní informace.
Uschovejte si prosím doklad o koupi pro případ záručního servisu.