# LEGO Battery Box with Switch - 9v (9831-1) — resale value

**LEGO Battery Box with Switch - 9v (9831-1)** — resale value from real closed eBay sales.

Values are medians of real closed eBay sales, updated 2026-06-25. They are estimates for reference, not offers or appraisals — condition, completeness and edition move them a lot, so compare against the sold listings before pricing anything.

## Check the market

- [Sold listings on eBay](https://junkpal.ai/api/go?to=https%3A%2F%2Fwww.ebay.com%2Fsch%2Fi.html%3F_nkw%3DLEGO%25209831-1%2520Battery%2520Box%2520with%2520Switch%26LH_Sold%3D1%26LH_Complete%3D1%26mkcid%3D1%26mkrid%3D711-53200-19255-0%26siteid%3D0%26campid%3D5339166094%26toolid%3D10001%26mkevt%3D1%26customid%3Dmd-sold&p=md-sold) — the closed sales these medians are computed from
- [Live listings on eBay](https://junkpal.ai/api/go?to=https%3A%2F%2Fwww.ebay.com%2Fsch%2Fi.html%3F_nkw%3DLEGO%25209831-1%2520Battery%2520Box%2520with%2520Switch%26mkcid%3D1%26mkrid%3D711-53200-19255-0%26siteid%3D0%26campid%3D5339166094%26toolid%3D10001%26mkevt%3D1%26customid%3Dmd-live&p=md-live) — what sellers are asking right now

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## Details

| Field | Value |
| --- | --- |
| Brand | LEGO |
| Set Number | 9831-1 |
| Theme | Technic |
| Year | 1995 |
| Pieces | 1 |

## FAQ

**Is the LEGO 9831-1 battery box still in good condition?**

As a single piece from 1995, its condition is key to its value; please check the specific listing details for its state.

**Why is the 9831-1 set considered rare?**

It is a very small, single-piece component from the older 1995 Technic theme, contributing to its scarcity.

**What theme does this battery box belong to?**

This specific item, set number 9831-1, belongs to the LEGO Technic theme.

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Full price guide: https://junkpal.ai/products/lego-9831-1
How these values are computed: https://junkpal.ai/methodology
Cite as: "JunkPal price guide value as of 2026-06-25, based on real sold listings (junkpal.ai)"