# Battery

> A motorcycle battery is the 12-volt lead-acid or lithium battery that turns the starter motor and powers the electrics when the engine is off.

- **Also known as:** Motosiklet aküsü, Battery, Akümülatör
- **Turkish term:** Akü
- **Category:** [Batteries](https://motorsikletparcasi.com/en/category/batteries)
- **Page:** https://motorsikletparcasi.com/en/glossary/battery

Main types: conventional flooded, maintenance-free **AGM**, **gel** and lightweight **lithium (LiFePO4)** batteries. The battery code (e.g. YTX7A-BS, YTZ5S) defines size, capacity and terminal layout; replace it with the same code or an equivalent.

- A fully charged 12 V lead-acid battery rests at about 12.6 V or more; below 12.2 V it needs charging.
- On a motorcycle that is not used for long periods, keep the battery on a smart (maintenance) charger.
- A battery that keeps going flat may be a charging fault in the [regulator rectifier](https://motorsikletparcasi.com/en/glossary/regulator-rectifier) or [stator](https://motorsikletparcasi.com/en/glossary/stator) rather than a bad battery.

## Related terms

- [Regulator rectifier](https://motorsikletparcasi.com/en/glossary/regulator-rectifier): A regulator rectifier converts the stator's AC output to DC and limits the charging voltage to protect the battery and electrics.
- [Starter motor](https://motorsikletparcasi.com/en/glossary/starter-motor): The starter motor is a small DC electric motor that turns the crankshaft using battery power to start the engine.
- [Stator](https://motorsikletparcasi.com/en/glossary/stator): The stator is the set of fixed coil windings inside the flywheel that generate alternating current together with the flywheel magnets.

---

- Source page: https://motorsikletparcasi.com/en/glossary/battery
- Last updated: 2026-10-09
- Türkçe sürüm: https://motorsikletparcasi.com/sozluk/aku.md
- Site overview: https://motorsikletparcasi.com/en/llms.txt
- Append .md to the URL of any product, category, motorcycle, brand, blog or company page on this site to get its Markdown version.