NinjaBatt Battery for HP 8540/8530 8-Cell 4400mAh

NinjaBatt’s 8‑cell 4400mAh (63Wh) laptop battery is a direct replacement for a range of HP EliteBook and Pavilion models, delivering reliable runtime with built‑in safety protections.

If your HP 8530/8540/8730/8740 series laptop is showing short battery life, sudden shutdowns, or won’t hold a charge anymore, this NinjaBatt replacement restores portable use without the OEM price. Assembled from grade‑A Li‑ion cells and commercial‑grade circuit boards, the pack is designed for consistent charging behavior and up to about 500 cycles when used and maintained properly.

What devices is this battery compatible with?

This NinjaBatt battery is engineered as a drop‑in replacement for multiple HP part numbers and EliteBook models. Check the part numbers printed on your old battery or your laptop’s service tag to confirm compatibility before purchasing.

• Fits HP part numbers: 458274‑363, 458274‑421, 458274‑422, 493976‑001, 484788‑001, 501114‑001 among others.
• Compatible models include EliteBook 8530/8530P, 8730/8730W/8730P, 8540W/8540P, 8740W/8740P and several Pavilion/ProBook variants.
• Check listed cross‑refs such as HSTNN‑LB60, HSTNN‑I43C, HSTNN‑OB60, HSTNN‑W46C before ordering.

How long will the replacement battery run and last?

Runtime varies by laptop configuration, workload and power settings, but the NinjaBatt pack matches the original nominal capacity: 4400mAh at 14.4V (63Wh). With balanced usage you can expect meaningful day‑to‑day runtime and long‑term durability thanks to grade‑A cells.

• Rated capacity: 4400mAh / 63Wh at 14.4V for comparable performance to the original pack.
• Designed for up to ~500 charge cycles when used with proper charging habits and storage.
• Actual runtime depends on CPU, display brightness, peripherals, and workload.

What safety features and build quality does this pack include?

NinjaBatt emphasizes safety and component quality to avoid the risks associated with low‑cost replacements. The battery includes standard protections and is assembled with reliable materials and tested cells.

• Protection circuitry against short circuits, overcharge, overcurrent and overheating.
• Manufactured from high‑grade Li‑ion cells and reinforced PCB for stable charging behavior.
• Each unit is tested to meet OEM‑style specifications before shipping.

How is the warranty and support handled?

The product comes with a standard 12‑month warranty that covers manufacturing defects under normal use. Customer support is available for installation guidance and troubleshooting during the warranty period.

• 12‑month limited warranty against manufacturing defects.
• Support for fitment and basic installation questions from the seller.
• Returns or exchanges processed per the seller’s stated policy if compatibility issues arise.

Who is this for: This NinjaBatt 8‑cell 4400mAh replacement battery is suited for owners of supported HP EliteBook and compatible Pavilion/ProBook laptops who need a dependable, cost‑effective alternative to OEM packs. It’s a practical choice for students, professionals, technicians, or small businesses seeking restored mobility without complicated installation—simply swap the old battery for the new unit and resume portable work. Verify your laptop’s part number and model before purchase to ensure a correct fit.