BTI CA09-BTI 10.8V 91Wh Li-Ion Battery for HP ProBook Series

Power your HP ProBook notebook with the BTI CA09-BTI 10.8V 91Wh Li-Ion Battery—an essential replacement that combines reliability, safety, and long-lasting performance for everyday productivity and professional workflows. Engineered to meet the demanding needs of ProBook users, this high-capacity battery delivers a dependable runtime across key models including the ProBook 640 G1, ProBook 645 G1, ProBook 650, and ProBook 650 G1, along with compatibility for E7U22UT and E7U22AA variants. Built to fit precisely into the original battery bay, the BTI CA09-BTI replacement minimizes downtime, reduces the need for frequent recharging, and keeps your crucial tasks moving forward whether you’re in the office, on the road, or delivering client presentations. With quality cells, robust safety features, and a smart design, this battery is designed to deliver consistent power while preserving the health of your laptop’s internal components over many recharge cycles.

• Long-lasting power and dependable runtime: The 91Wh capacity translates into extended work sessions between charges, so you can tackle long documents, complex spreadsheets, software development tasks, or creative projects without constantly seeking a power outlet. This high-capacity battery is especially valuable for professionals who travel, attend meetings, or work from locations where power access is limited.
• Designed for HP ProBook 640 G1, 645 G1, 650, and 650 G1: Precision engineering ensures a snug fit in the ProBook family, with connection points and dimensions calibrated for seamless compatibility. The CA09-BTI replacement mirrors the form factor of the original battery, simplifying the replacement process and preserving the aesthetic and ergonomic characteristics of your device.
• OEM-grade safety and compatibility: Crafted with Li-Ion chemistry and integrated protection features to guard against overcharge, over-discharge, short circuits, and thermal issues. This translates into safer operation, reduced risk of data loss during power events, and protection for your notebook’s internal circuitry.
• Simple replacement, minimal downtime: Designed for straightforward installation, the BTI CA09-BTI battery enables a quick swap with basic hand tools and careful handling. With clear fit and connector alignment, you can finish the replacement and be back to work in a fraction of the time compared with factory service.
• Quality you can trust: BTI leverages high-quality cells and meticulous manufacturing standards to deliver stable voltage, reliable cycle life, and low self-discharge. This means consistent performance across many recharge cycles, helping you maintain predictable battery life throughout the product’s lifespan.

Technical Details of BTI CA09-BTI

• Model: BTI CA09-BTI
• Voltage: 10.8V
• Capacity: 91Wh
• Chemistry: Li-Ion
• Compatibility: HP ProBook 640 G1, 645 G1, 650, 650 G1, and related E7U22UT/E7U22AA variants
• Part Number (as marketed): CA09-BTI
• Replacement Type: Laptop battery

How to install BTI CA09-BTI 10.8V Battery

Follow these safe, straightforward steps to replace your HP ProBook battery with the BTI CA09-BTI. Prepare your work area, gather a small Phillips-head screwdriver if needed, and ensure you have a static-free environment to protect sensitive components. Always power down the laptop completely and unplug any external power sources before beginning.

• Step 1 — Power down the notebook, shut the lid, and disconnect all cables, accessories, and external devices.
• Step 2 — Flip the laptop over and use the appropriate screwdriver to remove the screws securing the back panel; carefully lift the panel away to expose the internals.
• Step 3 — Locate the existing battery in the battery bay, disconnect the battery connector from the motherboard, and gently release the battery from its mounting brackets if needed.
• Step 4 — Remove the old battery from the bay and align the BTI CA09-BTI replacement, ensuring that the contact points and connectors line up with the original layout.
• Step 5 — Reconnect the battery to the motherboard, secure the battery into the bay, and reattach the back panel with the screws you removed.
• Step 6 — Reconnect external power and boot the notebook to confirm proper operation. Allow the battery to charge fully before normal use and calibrate if your device requires it.

Frequently asked questions

• Is the BTI CA09-BTI compatible with HP ProBook 640 G1? Yes. The CA09-BTI is designed to fit and function with HP ProBook 640 G1, as well as other ProBook models such as the 645 G1 and 650 series. It provides the same voltage and capacity as the original battery for reliable performance across supported models.
• What is the capacity and voltage of this battery? The BTI CA09-BTI delivers 10.8V with a capacity of 91Wh, delivering extended runtime for typical office tasks, light design work, and on-the-go productivity. Real-world runtime varies by workload, screen brightness, and accessory usage, but you can expect substantial endurance between charges compared with lower-capacity options.
• How do I know if this battery will fit my specific ProBook model? The product is engineered to fit the HP ProBook 640 G1, 645 G1, 650, and 650 G1 families, including variants such as E7U22UT and E7U22AA. If your device uses the CA09-BTI form factor and battery bay layout, it should be compatible. Always verify model compatibility with your device’s service tag or user manual when possible.
• Is it safe to use third-party batteries in my ProBook? Yes, provided you choose a reputable replacement battery like the BTI CA09-BTI that is designed for your model. Look for batteries with built-in safety protections (overcharge, over-discharge, short circuit, and thermal protection) and comply with your region’s disposal guidelines for spent cells. Avoid counterfeit or unverified products to minimize risk to your device.
• What is the expected lifespan of this battery? Battery lifespan depends on usage patterns, charging habits, and operating conditions. High-quality Li-Ion cells typically deliver hundreds of charge-discharge cycles with gradual capacity loss over time. To maximize longevity, avoid extreme temperatures, don’t leave it fully discharged for long periods, and perform occasional full charge-discharge cycles as recommended by your laptop manufacturer.
• Does the battery come with a warranty? Warranty terms vary by retailer and region. When purchasing, check the seller’s warranty policy for duration, coverage, and what is required to make a claim. Reputable sellers often provide a limited warranty for replacements to ensure consumer protection in case of defects or performance issues.