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OHYES BAT RBL08L 40V 4.0Ah Replacement Battery1 / 7
Product guide

OHYES BAT RBL08L 40V 4.0Ah Replacement Battery

OHYES BAT RBL08L is a 40V, 4.0Ah lithium-ion replacement battery listed for compatible Black & Decker 40V tools. Its stated compatibility spans several tool models, but confirm your exact battery and charger model before buying.

At a glance

  • Replacement battery for selected Black & Decker 40V cordless tools.
  • The listing states 4.0Ah capacity and lithium-ion chemistry.
  • An integrated LED indicator is described for checking battery charge level.
  • The manufacturer claims protection against overcharging, overheating, and short circuits.
Price
$32.99Save 15%

Reference price: $38.81

Price checked: Nov 14, 2026

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Often bought together

Pros and cons

Pros

  • The 4.0Ah capacity and listed 40V platform may suit owners replacing a compatible battery without changing tool systems.
  • The charge-level LED gives a direct way to check the battery's indicated charge.
  • The listing names compatible battery, tool, and charger model numbers to help narrow fitment.

Technical specifications

12 specifications
Identity
BrandOHYES BAT
ModelRBL08L
Battery
Voltage40V
Capacity4000mAh
Battery typeLithium-ion
Output voltage40 volts
Amperage3 A
ColorOrange
Compatibility and dimensions
Listed compatible battery and tool modelsLBXR36 LBX2040 LBX2540 LBX1540 LBXR2036 LBXR36-2 LST540 LCS1240 LST136W
Listed charger modelsLCS36 LCS40
Dimensions listed10"D x 10"W x 10"H
Support
Warranty description1 year

What to know before buying

Listing details to confirm

The listing details are inconsistent about battery capacity, describing 4.0Ah in the title and 4000mAh in the feature text, which are equivalent, but its input-voltage field is malformed and the listed 3 A amperage is not explained. The 10-inch dimensions are listed without clarification of how they apply to this battery. Compatibility and charging suitability are manufacturer claims, so verify your exact tool and charger models before purchase.

Who is it for?

A good fit for

  • Owners of listed Black & Decker 40V tools who need a replacement battery and can confirm the exact model match.
  • Buyers who value an onboard charge-level indicator.

Less suited to

  • Owners of tools outside the listed Black & Decker 40V compatibility range.
  • Buyers who need independently verified runtime, capacity, or fitment information.
OHYES BAT RBL08L 40V 4.0Ah Replacement Battery · photo 2
Additional product photo 2

Customer reviews on Amazon

4.4 / 5 · 189 ratings
  • 5 stars75%75%
  • 4 stars13%13%
  • 3 stars4%4%
  • 2 stars1%1%
  • 1 star7%7%

Aggregate ratings lean positive overall, but a smaller share of ratings are low, so they do not establish consistent performance or explain individual experiences. For a replacement battery, buyers should weigh that limited signal alongside the stated capacity and verify compatibility with their particular tool and charger.

Frequently asked questions

Which tools is the RBL08L listed to fit?

The listing names several Black & Decker 40V battery and tool models, including LBX2040, LBXR36, LST540, and LCS1240. Confirm your exact model before ordering.

What capacity does the listing specify?

It states 4.0Ah in the title and 4000mAh in the product details. These are equivalent capacity expressions.

Does it include a charger?

The supplied package details list a battery and user manual, not a charger. The product is described as compatible with LCS36 and LCS40 chargers.

OHYES BAT RBL08L 40V 4.0Ah Replacement Battery · photo 3
Additional product photo 3

Alternative options

Product details in Markdown