LEGO Battery Box (Tube) 4.5V 5100-1
LEGO Battery Box (Tube) 4.5V (5100-1) is estimated at about $11 sealed as of Sep 2026 (retail $8). Retired · 1 pieces · 1987 Service Packs.
- Set number
- 5100-1
- Theme
- Service Packs
- Year
- 1987
- Pieces
- 1
- Minifigures
- 0
- RRP
- $8
- Market value
- $11 (Estimate, Sep 2026)
- Used value
- $9
- Retirement
- Retired
Battery Box (Tube) 4.5V value by year
From $8 in 2011 to $11 (Estimate, Sep 2026): +32%. Its highest year was 2025, at $10.
| Year | Value | Change |
|---|---|---|
| Estimate, Sep 2026 | $11 | +10.5% |
| 2026 (so far) | $10 | −2.8% |
| 2025 | $10 | +7.7% |
| 2024 | $9 | +1.0% |
| 2023 | $9 | +1.9% |
| 2022 | $9 | −3.0% |
| 2021 | $9 | +7.1% |
| 2020 | $8 | −2.6% |
| 2019 | $9 | +0.8% |
| 2018 | $9 | +1.3% |
| 2017 | $9 | +0.8% |
| 2016 | $8 | +0.6% |
| 2015 | $8 | +0.6% |
| 2014 | $8 | +0.8% |
| 2013 | $8 | +0.7% |
| 2012 | $8 | +0.9% |
| 2011 | $8 | — |
Median of each year's market prices, sealed, in US dollars.
Frequently asked questions
How much is LEGO Battery Box (Tube) 4.5V (5100-1) worth?
LEGO Battery Box (Tube) 4.5V is worth approximately $11 on the secondary market today, based on current listings and completed sales. BrickStats updates this value daily.
Is LEGO Battery Box (Tube) 4.5V retired?
Yes — Battery Box (Tube) 4.5V (5100-1) has been retired by LEGO and is no longer in production. Retired sets have fixed supply, which is why their prices are driven purely by the resale market.
Has LEGO Battery Box (Tube) 4.5V gone up in value?
Yes. Battery Box (Tube) 4.5V launched at $8 and now trades around $11, an increase of 35.0%. See the price history chart for how it got there.
What is the price per piece for Battery Box (Tube) 4.5V?
At its $8 retail price across 1 pieces, Battery Box (Tube) 4.5V works out to about $8.000 per piece. Collectors often use price per piece to judge whether a set is good value.
Is LEGO Battery Box (Tube) 4.5V a good investment?
Battery Box (Tube) 4.5V currently trades 35.0% above its $8 retail price, and it is retired, so no new supply is entering the market. Past performance is not a prediction — condition, packaging and how long you hold all affect what a set actually sells for. BrickStats reports the numbers rather than giving investment advice.
Why is LEGO Battery Box (Tube) 4.5V so expensive?
Battery Box (Tube) 4.5V was released in 1987 and has since retired. Once LEGO stops producing a set, the only supply is what is already in circulation, so sealed copies in good condition compete for a shrinking pool of stock. That scarcity, not the parts, is what moves the price.