Introducció
This manual provides essential information for the self-installation and proper use of your Seilylanka 4000mAh 18V Li-ion tool battery pack, compatible with Metabo models 6.25527, 5INR19 / 66-2. This product is designed for users with technical proficiency in battery assembly and electronics, as it requires connecting to a protection board and involves complex circuitry. Please read all instructions carefully before proceeding with installation to ensure safety and optimal performance.
Important Note: Due to the nature of self-installation and the complexity of connecting to a protection board, please ensure you are fully capable of completing the installation. Refunds cannot be accepted after delivery if the product has been used or modified for self-installation. Consider this carefully before purchase.
Informació de seguretat
Lithium-ion batteries can be dangerous if not handled correctly. Adhere to the following safety guidelines:
- Instal·lació professional recomanada: While designed for self-installation, it is highly recommended that installation be performed by individuals with experience in electronics and battery assembly.
- Protecció ocular: Utilitzeu sempre ulleres de seguretat quan treballeu amb piles.
- Eines aïllades: Utilitzeu eines aïllades per evitar curtcircuits accidentals.
- Eviteu curtcircuits: Do not allow metal objects to come into contact with the battery terminals. This can cause sparks, heat, and fire.
- Do Not Puncture or Disassemble: Never puncture, open, or disassemble the battery cells. This can release hazardous materials and cause fire or explosion.
- Control de temperatura: Do not expose batteries to extreme temperatures (above 60°C / 140°F or below -20°C / -4°F). Avoid direct sunlight and heat sources.
- Càrrega: Only charge with chargers specifically designed for 18V Li-ion battery packs. Overcharging can lead to overheating and damage.
- Eliminació: Desfeu-vos de les piles de manera responsable d'acord amb la normativa local. No les llenceu a les escombraries domèstiques.
- Mantenir allunyat dels nens: Store batteries out of reach of children and pets.
Producte acabatview
The Seilylanka 4000mAh 18V Li-ion battery pack is supplied as a set of 10 individual Li-ion cells, approximately 18mm x 65mm each, pre-assembled with connection tabs for self-installation into your existing tool battery casing. This configuration allows for flexible capacity selection and integration with your tool's protection board.

Figura 1: superior view of the 10 Li-ion cells with pre-attached connection tabs, ready for assembly.

Figura 2: Angle view illustrating the individual cells and their welded connection tabs, crucial for series/parallel configuration.
Especificacions
| Característica | Detall |
|---|---|
| Tipus de bateria | Li-Ion (Lithium-Ion) |
| Volum nominaltage | 18 Volts |
| Capacitat | 4000 mAh (Milliampaquesta hora) |
| Nombre de cel·les | 10 cel·les |
| Cell Dimensions (approx.) | 18mm x 65mm per cell |
| Compatibilitat | Metabo 6.25527, 5INR19 / 66-2 18V tool batteries |
| Número de peça del fabricant | RD-MET18VB(X) |
Configuració i instal·lació
WARNING: This is a self-installation product. Incorrect assembly or wiring can lead to severe damage to the battery, tool, or personal injury. Proceed only if you possess the necessary technical skills and understanding of lithium-ion battery circuitry and safety protocols. The battery pack requires connection to an existing protection board (BMS) from your original tool battery.
- Preparació:
- Ensure your workspace is clean, well-lit, and free of conductive materials.
- Gather necessary tools: insulated screwdrivers, wire cutters, soldering iron (if required for BMS connection), heat shrink tubing, multimeter.
- Utilitzeu l'equip de protecció individual (EPI) adequat, incloent-hi ulleres de seguretat i guants aïllants.
- Disassemble Original Battery Pack:
- Obriu amb cura la casing of your original Metabo 18V battery pack. Note the arrangement of the cells and the wiring connections to the Battery Management System (BMS) board. Take photos for reference.
- Identify the positive (+) and negative (-) terminals, as well as any balance leads connected to the BMS.
- Safely remove the old battery cells.
- Inspect New Cells:
- Verify that all 10 new cells are intact and free from physical damage.
- Confirm the pre-attached nickel tabs are securely welded.
- Arrange Cells:
- Arrange the new cells in the same configuration as the original battery pack (typically 5 series, 2 parallel for 18V). Ensure correct polarity for each cell and series/parallel connection.
- The pre-attached tabs are designed for series and parallel connections.
- Connect to BMS (Protection Board):
- This is the most critical step. The new battery pack deu be connected to the existing, functional BMS from your original battery. The BMS provides overcharge, over-discharge, overcurrent, and short-circuit protection.
- Carefully solder or connect the main positive and negative leads from the new cell pack to the corresponding terminals on the BMS.
- Connect any balance leads from the cell pack to the appropriate balance ports on the BMS. Refer to your original battery's wiring diagram or photos taken during disassembly. Incorrect balance lead connection can damage the BMS or cells.
- Assegureu-vos que totes les connexions estiguin segures i aïllades per evitar curtcircuits.
- Prova Voltage:
- Before reassembling, use a multimeter to verify the total voltage of the assembled pack at the main output terminals of the BMS. It should be approximately 18V (or slightly higher if fully charged).
- Comproveu el vol cel·lular individualtages if your multimeter has a balance port checker, or if you can safely access individual cell terminals.
- Remunta Casing:
- Carefully place the assembled battery pack and BMS back into the original tool battery casing. Ensure no wires are pinched and there is no excessive pressure on the cells.
- Assegureu-vos el casing.
- Càrrec inicial:
- Place the newly assembled battery pack into a compatible 18V Li-ion charger. Monitor the charging process for any unusual heat or behavior.
- Deixeu que la bateria es carregui completament abans del primer ús.
Pautes de funcionament
- Primer ús: Fully charge the battery before its first use to ensure optimal performance and lifespan.
- Càrrega regular: Charge the battery regularly, ideally before it is completely depleted. Avoid deep discharges as they can reduce battery life.
- Utilitzeu un carregador compatible: Always use the original or a compatible charger designed for 18V Li-ion tool batteries.
- Interval de temperatura: Operate the battery within its recommended temperature range (typically 0°C to 45°C for charging, -20°C to 60°C for discharging).
- Eviteu la sobrecàrrega: Do not attempt to draw more current than the battery or tool is designed for, as this can trigger the BMS protection or damage the cells.
Manteniment i emmagatzematge
- Neteja: Keep the battery contacts clean and free of dust and debris. Use a dry cloth for cleaning.
- Temperatura d'emmagatzematge: Store the battery in a cool, dry place, away from direct sunlight and extreme temperatures. Ideal storage temperature is around 20°C (68°F).
- Storage Charge: For long-term storage (more than 3 months), store the battery at approximately 50-60% charge. Do not store fully charged or fully discharged.
- Càrrega periòdica: If stored for extended periods, check the charge level every 3-6 months and recharge to 50-60% if necessary.
- Eviteu la humitat: Do not expose the battery to water or high humidity.
Resolució de problemes
| Problema | Causa possible | Solució |
|---|---|---|
| La bateria no es carrega |
|
|
| L'eina no s'encén amb la bateria |
|
|
| Battery gets unusually hot during use/charge |
|
|
If you encounter issues not listed here or if solutions do not resolve the problem, it is recommended to consult with a qualified electronics technician. Do not attempt repairs beyond your skill level, especially with lithium-ion batteries.
Garantia i Suport
As this product is designed for self-installation and requires integration with an existing protection board, the warranty may be limited to manufacturing defects of the individual cells upon receipt. Damage resulting from incorrect installation, improper handling, or misuse is not covered.
For technical support or inquiries regarding manufacturing defects, please contact Seilylanka customer service through the retailer where the product was purchased. Provide your purchase details and a clear description of the issue.
Always refer to the original tool manufacturer's guidelines for battery compatibility and usage.





