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Makita BL1021B: battery facts and compatibility

By 김민성 · ToolBattery editorial

Source review: 2026-10-30 · US English

BL1021B is a documented battery in the 12V max CXT system. This page identifies its sourced specifications, exact-model restrictions and the next check before use.

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Independent reference. ToolBattery is not a manufacturer or authorized service center. Model revision, region, condition and the latest manual may change the answer. Do not use an unapproved adapter or modified battery.
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Verified model facts

FieldManufacturer-sourced value
ManufacturerMakita
Exact modelBL1021B
Product typebattery
System12V max CXT
MarketUS
Voltage label12V max
Capacity2Ah
Chemistrylithium-ion
  • CXT slide pack is not compatible with legacy 12V max pod-style tools or chargers.
  • Battery page names DC10WD and DC10SB; the DC18RE manual additionally lists this battery as supported.
  • The manufacturer lists 2Ah capacity for this exact pack.
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What compatibility data says

  • charger to battery — DC10SB: compatible. Manufacturer documentation records this charger to battery relationship.
  • charger to battery — DC10WD: compatible. Manufacturer documentation records this charger to battery relationship.
  • charger to battery — DC18RE: compatible. Manufacturer documentation records this charger to battery relationship.
BL1021B ↔ DC10SBManufacturer documentation records this charger to battery relationship.BL1021B ↔ DC10WDManufacturer documentation records this charger to battery relationship.

Exceptions, source limits and safety

  • Check the exact region, revision and current manufacturer instructions.

A missing rating is not zero or universal support. Charger AC input and pack-to-tool use are separate checks.

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Official sources

These source records were reviewed as of 2026-10-30; access methods differ. Open the latest manufacturer manual for your exact type, region and revision before use.

  1. Makita U.S.A. — Makita BL1021B: 12V max CXT® 2.0Ah BatteryThe official US page identifies BL1021B as 12V max CXT® 2.0Ah Battery. CXT slide pack is not compatible with legacy 12V max pod-style tools or chargers. · full_page · Checked 2026-10-30
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