Casio NP-40 Replacement Battery 3.7V 1100mAh Li-ion
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Casio NP-40 Replacement Battery 3.7V 1100mAh Li-ion - is backordered and will ship as soon as it is back in stock.
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Battery Care Tips
Battery Care Tips
🔹 Getting Started
Charge your new battery fully before you use it for the first time. Over the next few charge cycles, run your device down to around 20% before you recharge—this helps the battery perform its best. After that, charge whenever you need to.
🔹 Keep It Healthy
Avoid letting your battery completely drain or staying plugged in constantly. Both extremes wear it out faster. Store the battery in a cool, dry place when you're not using it, since heat damages batteries quickly.
Delivery and Shipping
Delivery and Shipping
🔹 Most orders ship the next day, and we use FedEx, UPS, Purolator and other carriers to get them to you. Lithium batteries have to ship by ground only, not air or USPS. Make sure your address is right before you order, because if we have to send it back, you pay for shipping again.
Disclaimer
Disclaimer
⚠️ Disclaimer: All product names, trademarks, and registered trademarks belong to their respective owners.
🔹 We use these names, brands, or model numbers only for identification and compatibility purposes.
Casio NP-40 Replacement Battery 3.7V 1100mAh Li-ion - is backordered and will ship as soon as it is back in stock.
Voltage
3.7V
Amp
1100mAh
Casio Exilim Zoom EX-Z600BE Series — 3.7V Li-ion Replacement Battery (NP-40)
This is a 3.7V, 1100mAh Li-ion cell built to the NP-40 specification. It fits the Casio Exilim Zoom EX-Z600BE and a wide range of Exilim Zoom and Exilim Pro compact cameras sharing the same battery slot. Voltage and form factor match the OEM cell exactly — dimensions are 38.25 × 38.15 × 9.50mm.
- Exilim Zoom and Pro platform compatibility: The NP-40 slot is shared across Casio Exilim Zoom and Pro bodies — EX-Z600BE, EX-Z1200BK, EX-Z100BN, EX-P505, and 63 additional models. They share the same 3.7V rail, connector pinout, and cell footprint, so one cell covers the full NP-40 lineup.
- Bench tested on actual hardware: We ran this cell through a full charge and discharge cycle in an NP-40 compatible body. The BMS accepted the cell without fault flags, and voltage stayed within spec across the discharge curve from 4.2V down to the low-voltage cutoff.
- First-install charge cycle on Casio bodies: Charge the new cell fully inside the camera body or OEM charger before your first shoot. Some Casio Exilim BMS systems map battery-remaining percentage against a discharge curve calibrated during the first full cycle — skipping this step can cause the indicator to read inaccurately from the start.
Flash not fully recycling between shots on a new NP-40 cell
The Exilim Zoom's flash capacitor draws a sharp recharge current spike after each shot. Near the end of a cell's usable charge, the internal resistance rises enough that the capacitor can't pull full recharge current fast enough. The camera may still fire the flash, but output drops and recycle time stretches. If this happens early in a session, check resting voltage — a healthy NP-40 cell should read 4.1V or above after a full charge.
Battery percentage jumping erratically on the Exilim display
The Exilim's fuel gauge maps percentage readings against a fixed voltage-threshold table calibrated to the original cell's discharge curve. A replacement cell with a slightly different curve hits those thresholds at different points, causing the indicator to jump — for example, from 80% to 50% in a few frames. This is a display calibration issue, not a cell fault. Run one complete charge and discharge cycle through the camera body and the indicator will remap to the new cell's curve.
Compatible Models
Replaces Part Numbers
Technical Specifications
Product Highlights
- Brand: Casio
- Manufacturer: CS
- Series: Standard
- Color: Black
- Product Type: Li-ion
- Battery Type: Li-ion
- Warranty: 12 Months
- Bulk Orders: sales@batteryweb.com
Frequently Asked Questions
The EX-Z600BE shows a "no battery" or battery error icon right after I put in the new NP-40 — is the cell dead?
It's not dead — it's a BMS authentication check the Casio body runs on a cold cell it hasn't seen before. Remove the battery, reinsert it firmly, and place the camera on charge via the OEM charger for a full cycle. Most Exilim bodies accept the new cell and clear the error after that first supervised charge. If the error persists, check that the battery contacts on both the cell and the body are clean and making full contact.
My shot count is way lower than expected — the EX-Z600BE drains this battery faster than the old one seemed to.
Shot count figures assume minimal flash use, no continuous AF, and short review times — real-world use adds up fast. Flash capacitor recharging, sustained zoom motor movement, and LCD-on time each pull additional current beyond what the rated spec accounts for. Cold ambient temperatures also compress the usable capacity window on any Li-ion cell. Check that the body isn't running in a video-preview or continuous mode you didn't intend — those draw significantly more than still capture.
The EX-Z600BE body gets noticeably warm during video recording with the new battery — is that the cell or the camera?
That heat is coming from the camera body, not the battery. The Exilim's image sensor, processor, and write buffer all run simultaneously during video, and the combined draw is significantly higher than still shooting. The cell does run warmer under sustained high current draw, but what you're feeling through the body casing is processor and sensor heat. Keep video clips to reasonable lengths and allow the body to cool between longer takes — the NP-40 cell's low-voltage cutoff will protect it from overdischarge before heat becomes a cell-level issue.
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