Biswaye 20V 4.0Ah Lithium Replacement Battery for Black & Decker 20V MAX Tools — High Capacity, Microchip Protection

Biswaye LBXR20 is a 20V 4.0Ah lithium-ion replacement battery that fits Black & Decker 20V MAX power tools and delivers fade-resistant, microchip-protected runtime.

This high-capacity Biswaye pack is built to be fully compatible with a wide range of Black & Decker 20V models, providing a reliable alternative to OEM batteries. Designed to slide into the same battery bay and work with original chargers, it aims to restore power to lawn, garden, and workshop tools without the premium OEM price. Safety features, regulatory compliance, and a tested cycle life make it a practical choice for homeowners and DIYers who need dependable cordless performance.

Will this Biswaye battery work with my Black & Decker 20V tool?

Yes — the LBXR20 form factor is engineered to match the connections and dimensions used across many Black & Decker 20V MAX devices. It has been tested to fit dozens of model lines so installation is usually tool-free: simply slide it into the existing battery slot until it locks.

• Compatible models include LST201, LCC221, LST522, LST300 and more.
• Works with Black & Decker chargers such as LCS1620 and BDCAC202B.
• Designed to replicate OEM electrical contact placement and latch alignment.

How long will the Biswaye LBXR20 keep my tool running?

The 4.0 Ah capacity gives extended runtime compared with lower-capacity packs, so you can complete longer mowing, trimming, or drilling sessions between charges. The battery is built to maintain usable capacity across many charge cycles with minimal memory effect.

• 4.0 Ah (4000 mAh) delivers more run time than 1–2 Ah packs.
• Rated to hold useful capacity for up to about 500 charge cycles under normal conditions.
• Low self-discharge design helps preserve stored charge during storage periods.

What protections and standards does this battery include?

Biswaye added an integrated protection microchip to manage charge behavior and prevent common failure modes like overcharge and rapid self-discharge. The pack is produced and tested to meet common safety and environmental standards so it can be used with confidence in typical home and garden environments.

• Built-in circuit protects against overcharging and excessive discharge.
• Manufactured to comply with CE, RoHS, and FCC-related requirements.
• Quality checks aim to match OEM reliability and electrical performance.

How do I maintain and charge the replacement battery correctly?

Use the original or compatible Black & Decker 20V chargers and follow standard lithium-ion care: avoid deep discharge, store partially charged if unused long-term, and keep contacts clean. Charging in moderate temperatures and avoiding prolonged exposure to extreme heat will prolong life and performance.

• Charge with compatible chargers like LCS1620; do not use damaged chargers.
• Store in a cool, dry place at roughly 30–60% charge for long-term storage.
• Wipe contacts before installation to ensure reliable electrical connection.

Who this is for: The Biswaye LBXR20 is aimed at homeowners, weekend landscapers, and DIY enthusiasts who need an economical, high-capacity replacement for Black & Decker 20V MAX batteries. If your original pack no longer holds charge, if you want a backup battery to keep multi-tool tasks moving, or if you need extended runtime without buying new tools, this compatible 4.0 Ah battery is a practical choice. For any pre- or post-purchase questions, contact the seller through the storefront or the "Contact Seller" option on your order page.