How many pieces are in the Rechargeable Battery Box?

Rechargeable Battery Box contains 1 pieces.

What age is the Rechargeable Battery Box recommended for?

This set is recommended for ages 7+.

When was the Rechargeable Battery Box released?

Rechargeable Battery Box was released in 2009.

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🏛 Power Functions

Set #8878

Rechargeable Battery Box

The Rechargeable Battery Box is an essential component for LEGO Power Functions.

Before you buy

Who it's for: Ages 7+ · Beginner build LEGO builders who want to motorize their creations and avoid using disposable batteries.
Build: 1 pieces · about 0.5 hours Build time is an estimate.
Price: $49.99 list price · $49.99 per piece
Availability: Retired at LEGO

★★★☆☆ 3.7 community rating from 27 ratings

Fans appreciate the convenience and sustainability of the rechargeable battery box, but some find it expensive compared to using standard batteries. It's praised for providing reliable power to motorized LEGO creations.

$49.99

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📝 Our Take

AI-assisted editorial summary, grounded in our LEGO database and public community discussions. How we use AI

The Rechargeable Battery Box is an essential component for LEGO Power Functions. It provides a sustainable and convenient power source for your motorized creations, eliminating the need for disposable batteries.

This set is perfect for LEGO builders who want to add movement and functionality to their models. It's easy to integrate into existing creations and provides a long-lasting power supply.

Skip this if you're not interested in motorizing your LEGO creations. If you prefer static displays, this component is not necessary.

✨ New

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How long does the battery last on a single charge? Is this battery box compatible with newer LEGO control systems? What is the best way to maintain the battery for long-term use? How does this compare to using standard AA batteries in terms of cost and performance?

🧱 Building Experience

AI-assisted build estimate, grounded in our LEGO database and public community discussions. How we use AI

🧩

Pieces

⏱

0.5h

Estimated Build Time

📊

Beginner

Difficulty

👤

Ages

Build Highlights:

Easy to integrate into LEGO models.
Provides a sustainable power source.
Rechargeable for long-term use.
Compatible with LEGO Power Functions system.

📈 Investment Analysis

AI-assisted investment analysis, grounded in our LEGO database and public community discussions. How we use AI

Not enough price history for a trend

Investment Grade

⏳ Retired

The Rechargeable Battery Box is a retired LEGO Power Functions component, making it potentially valuable to collectors and builders who need a replacement or want to expand their motorized creations. As demand for Power Functions components remains steady, the value of this set could increase over time, especially if well-maintained and in its original packaging. However, technological advancements in newer LEGO power systems may limit its long-term appreciation.

Not Financial Advice: Content is for educational purposes only. Past performance doesn't guarantee future results. Full disclaimer

📖 About This Set

Charge up your LEGO® Power Functions!

No more disposable batteries! This rechargeable battery box has built-in Lithium polymer batteries for low weight and maximum power. Use it in your LEGO® Power Functions models and never have to use disposable batteries again!

Use the #8887 10VDC LEGO Transformer to charge the battery!
Motor speed can be controlled via the battery box speed control dial!
Output voltage is 7.4 V!

⚖ Compare Similar Sets

AAA Battery Box

Power Functions • 1 pcs

This Rechargeable Battery Box is a key component of the LEGO Power Functions system. While newer systems like Powered Up offer advanced features, this battery box remains a reliable and cost-effective option for motorizing LEGO creations. Consider this if you are invested in the Power Functions ecosystem, otherwise explore newer options.

📦 Parts Inventory

Official piece count: 1
Parts cataloged in this inventory: 1 unique parts, 1 pieces

Missing a piece? Check this set piece by piece, with look-alike colors flagged and element IDs for replacements.

Battery Box, Powe...

Part #: 84599 1× Light Bluish Gray

This set contains only one part, the Rechargeable Battery Box itself. This is a specialized electronic component essential for LEGO Power Functions.

🛒 Where to Buy

eBay

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💎 Notable Parts

Light Bluish Gray Battery Box, Power Functions, with Dark Bluish Gray Bottom [Rechargeable] (1x) $20.00

Est. BrickLink Part Value

$20.00

💡 MOC Potential

🚗 Powering larger LEGO vehicles

🤖 Adding movement to LEGO robots

🏙 Motorizing LEGO city trains

Community Insights

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Inventory Statistics

Unique Parts

Official Piece Count

Cataloged Inventory Pieces

Minifigures

Inventory Version: 1

Missing a piece? Use the Missing Piece Checker.

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Rechargeable Battery Box