Ericsson T28s original battery: where to buy
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The Ericsson T28s is famous for its lithium-polymer battery, the world's first. Today, original batteries are impossible to find, but excellent compatible ones exist.
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## What battery does the Ericsson T28s use?
The Ericsson T28s uses a **Li-Pol (lithium-polymer)** battery, model **BST-15**.
| Specification | Detail |
|:---|:---|
| Model | BST-15 |
| Type | Li-Pol (lithium-polymer) |
| Original Capacity | 500 mAh |
| Compatible Capacity | 500-800 mAh |
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## Where to buy a compatible battery
### 1. eBay (recommended)
Search for "battery Ericsson T28s" or "batteria Ericsson T28s".
**Price:** 15-25 euros
**Advantages:** wide selection, shipping from China or Europe
### 2. Amazon
Search for "batteria Ericsson T28s".
**Price:** 20-30 euros
**Advantages:** easy returns, fast shipping
### 3. BatteryUpgrade.it
Specialized website for vintage phone batteries.
**Price:** 25-35 euros
**Advantages:** guaranteed quality, 12-month warranty
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## Original vs. Compatible Battery
| Type | Availability | Price | Lifespan |
|:---|:---|:---|:---|
| Original BST-15 | Unavailable | 50-100 euros used | Unknown |
| Compatible | Available | 15-25 euros | 1-2 years |
⚠️ **Important:** All original Ericsson T28s batteries are dead after 25 years. Do not buy used original batteries. They do not work.
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## How to choose a quality compatible battery
| What to check | Why it's important |
|:---|:---|
| Stated capacity | Minimum 500 mAh |
| Positive reviews | At least 4 stars |
| Reliable seller | At least 98% feedback |
| Warranty | At least 12 months |
Avoid batteries under 10 euros. They are of poor quality and don't last long.
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## How to replace the battery
1. Turn off the phone
2. Remove the back cover
3. Remove the old battery (it might be swollen)
4. Insert the new battery
5. Recharge for 2-3 hours before first use
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## 📱 Related Articles
- [Ericsson T28s – The complete guide: features, issues, and value](https://www.infosate.com/blogs/notizie/ericsson-t28s-la-guida-completa-caratteristiche-problemi-comuni-e-quanto-vale-oggi)
- [Nokia 3310 – The complete guide](https://www.infosate.com/blogs/notizie/nokia-3310-la-guida-completa-caratteristiche-giochi-problemi-comuni-e-quanto-vale-oggi)
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## Conclusion
Original batteries for the Ericsson T28s no longer exist. Buy a compatible one on eBay or Amazon. It costs 15-25 euros and lasts 1-2 years. For a few euros, your T28s will be working again.
**Have you bought a battery? Tell us about your experience in the comments!**