GHU 73Wh 70++ Replacement Battery for Lenovo ThinkPad

If your older ThinkPad won’t hold a charge, this GHU 73Wh 70++ (double-plus) replacement battery delivers higher-capacity runtime and broad model compatibility. It’s designed as a direct-fit substitute for factory part numbers like 0A36303, 45N1001, 42T4753 and others, offering a nine-cell arrangement that extends unplugged use and keeps legacy laptops productive.

Which Lenovo models and part numbers does this battery work with?

This battery is built to fit many ThinkPad notebooks from the T, W and E families. It replaces several common OEM and aftermarket part numbers, so you can match it to the sticker on your original battery or the service tag information.

• Compatible series: T410/T410i, T420/T420i, T430/T430i, T510/T510i, T520/T520i, T530/T530i, W510/W520/W530, SL410/SL510, L410/L412/L420/L421/L430, L510/L512/L520/L530 and various E-series.
• Replaces parts such as 0A36303, 0A36302, 45N1001, 45N1011, 45N1173, 42T4753, 51J0499, 57Y4185 and similar numbers.
• Often labeled as 70+ or 70++ to indicate higher capacity (nine-cell) designs.

How much runtime can I expect from the GHU 73Wh 70++ battery?

Actual runtime depends on your workload, screen brightness and power settings, but a 73Wh nine-cell battery typically delivers several hours more than older six-cell packs. Light use like web browsing and document editing may reach five hours or more under moderate settings.

• 73 Wh capacity for longer unplugged sessions compared with standard 6-cell cells.
• Designed to support typical office and classroom workloads for multiple hours.
• Performance varies by model, battery age, and system power profile.

Is the GHU battery safe and reliable for older ThinkPads?

GHU batteries are UL-tested to meet recognized safety benchmarks and are built to deliver stable performance for refurbished or out-of-production Lenovo laptops. The pack includes protection circuitry to guard against overcharge and short-circuit conditions when used with compatible chargers and systems.

• UL-tested construction for safety and consistent performance.
• Integrated protection electronics to help prevent common electrical faults.
• Backed by a limited 1-year warranty and email support for troubleshooting.

How do I choose this battery if I’m not sure which model I need?

Find the part number printed on your existing battery or check your laptop’s bottom label/service tag. Match any of the compatible numbers listed with GHU’s replacement references; when in doubt, compare the physical connector shape and battery bay fitment.

• Compare printed part numbers (e.g., 42T4753, 45N1001) from your old battery with the GHU listing.
• Verify connector layout and battery casing shape against your laptop’s battery slot.
• Contact GHU support if model matching remains uncertain — 1-year warranty included.

Who is this for: Technicians, small-business users and owners of aging Lenovo ThinkPads who want a higher-capacity, cost-effective replacement battery to extend device life. This GHU 73Wh 70++ battery suits people maintaining refurbished laptops, students needing dependable runtime, and professionals who prefer a direct-fit alternative to discontinued OEM packs.