18V Batteries for Bosch Power Tools

Reliable Bosch 18V battery replacements for everyday work

A dependable Bosch 18V battery keeps your cordless tools ready for drilling, screwdriving, fastening, lighting and workshop tasks. In this category you will find replacement batteries for Bosch 18 volt power tools, including popular screwdriver and drill series used by professionals, installers, craftsmen and home users. Whether you need a compact pack for lighter jobs or a higher-capacity battery for longer runtime, the selection covers practical Li-Ion options from 2000 mAh up to powerful 8Ah solutions.

These batteries are designed for compatibility with many Bosch 18V models and battery references, including BAT609, BAT609G, BAT610G, BAT611, BAT618, BAT618G and Bosch tool ranges such as GDR, GLI, GSB, GSR, GDS, PSB, PSR and selected ProCORE18V applications. Always compare the voltage, connector shape and original battery code before ordering to ensure the correct fit for your tool.

Which 18V Bosch battery capacity should you choose?

The right capacity depends on how you use your cordless screwdriver or drill. A 2000 mAh battery is lightweight and comfortable for quick assembly, furniture work or occasional repairs. Medium capacities such as 2600 mAh, 3000 mAh, 3300 mAh and 4000 mAh offer a good balance between runtime and tool weight. For intensive use, demanding fastening or longer working sessions away from the charger, a 5000 mAh or 8Ah Bosch 18V battery replacement can help reduce interruptions.

• 2000 mAh: compact and light for short tasks and everyday DIY use.
• 2600-3300 mAh: balanced option for regular drilling and screwdriving.
• 4000-5000 mAh: longer runtime for workshop and professional use.
• 8Ah: high-capacity choice for heavy workloads and extended operation.

Benefits of Li-Ion batteries for Bosch 18V tools

Most products in this category use Li-Ion technology, which is widely preferred for modern power tools. Lithium-ion batteries provide strong energy density, lower self-discharge and convenient charging compared to older battery technologies. This means your Bosch 18V screwdriver battery can remain ready for use longer when stored correctly, while also delivering stable performance during work.

Replacing a worn battery is often a cost-effective way to extend the life of a trusted tool. If your screwdriver runs for only a few minutes, loses power under load, or the old pack no longer charges properly, a new battery for Bosch 18V tools may restore usability without needing to buy a complete new machine.

How to check compatibility before purchase

Before choosing a replacement, inspect the label on your original battery and tool. Look for the exact voltage, usually marked as 18V, and the battery model number such as BAT609 or BAT618. Also check the physical slide mount and contact layout. If your tool model is from a series such as GSR 18V, GSB 18V, PSR 18 LI-2 or GDS 18V, compare it with the product description in the listing.

1. Confirm your tool works with Bosch 18V battery packs.
2. Match the original battery code or compatible tool series.
3. Select the capacity according to runtime and weight preferences.
4. Use a suitable charger intended for the same battery platform.

Tip: A higher mAh rating does not change the voltage of the tool; it mainly increases the potential runtime. The battery must still be 18V and physically compatible.

Browse the range of 18V batteries for Bosch power tools and choose the replacement that best matches your screwdriver, drill or cordless system. With the right battery, your Bosch tool can continue delivering reliable performance for repairs, construction, installation and daily workshop tasks.