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JAY-tech Jay-Cam i4800 Compatible Battery 3.7V 1600mAh

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Fits JAY-tech Jay-Cam i4800 digital camera, replaces OEM battery CS-KLIC8000.
Voltage 3.7V, capacity 1600mAh—standard output for this compact camera during photo and video capture.
Connector slides into camera body slot with positive terminal forward, locking tab seats flush against housing.
Bench test showed clean voltage ramp on first insertion, BMS accepted cell without authentication rejection or display errors.
On first use, charge fully in the camera body before heavy shooting—JAY-tech firmware maps charge thresholds during initial insertion cycle for accurate remaining-battery display.
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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.

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⚠️ 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.

Voltage

3.7V

Amp

1600mAh

JAY-tech Jay-Cam i4800 — 3.7V Li-ion Replacement Battery

This 3.7V, 1600mAh Li-ion cell is a direct replacement for the JAY-tech Jay-Cam i4800 compact digital camera. It fits the i4800's battery compartment at 52.00 × 28.40 × 14.50mm and matches the original cell's voltage rail. Capacity is rated at 5.92Wh.

  • Jay-Cam i4800 fit: The i4800 uses a single-cell 3.7V Li-ion pack with a dedicated connector pinout. This cell matches that voltage rail and physical footprint, so the door latch and contact pins seat correctly without modification.
  • Bench tested on actual hardware: We cycled this cell through the i4800's BMS under mixed still and video load. The BMS accepted the cell without rejection flags, and protection circuits triggered correctly at low-voltage cutoff.
  • First-use charge cycle for the i4800: Insert the cell and run a full charge inside the camera body or OEM charger before your first shoot. Some i4800 units need that in-body charge cycle to calibrate the battery-remaining indicator to the new cell's discharge curve.

Camera showing dead battery indicator on a partially charged replacement cell

The i4800's fuel gauge maps voltage thresholds from the original cell's discharge curve. A new third-party cell can present a slightly different mid-range voltage, causing the indicator to read empty before the cell actually is. This is a calibration mismatch, not a fault with the cell itself. Run one full charge-to-discharge cycle inside the camera body to let the BMS re-map its thresholds to the new cell.

Battery percentage jumping erratically on the i4800 display

Erratic percentage readings on the i4800 happen when the BMS samples voltage during a high-draw moment — flash recharge, continuous AF, or video encode — and maps that dip to the wrong capacity segment. The indicator lurches because the camera is reading transient sag, not true state of charge. Let the cell settle at rest for 30 seconds after a burst-shooting sequence and the reading will stabilise. If the jumping persists past two full charge cycles, check that the battery contacts in the compartment are clean and making firm contact.

Compatible Models

Jay-Cam i4800

Technical Specifications

Voltage3.7V
Amp Hours1600mAh
Capacity1600mAh
Rate5.92Wh
Net Weight41.2g /1.45 oz
Gross Weight66.2g /2.34 oz
Approximate Weight66.2g /2.34 oz
Dimension 52.00 x 28.40 x 14.50mm

Product Highlights

  • Brand: JAY-tech
  • 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 i4800 shows "no battery" when I insert the replacement — is the cell dead?

It's usually not a dead cell. The i4800's BMS runs an authentication check on insertion, and a new cell that hasn't been charged inside the camera body can fail that handshake. Remove the battery, insert it again firmly so both contacts seat, then charge via the OEM charger or in-body USB until the charge indicator confirms full. Most "no battery" rejections clear after that first in-body charge cycle.

My shot count is much lower than I expected from a 1600mAh cell — what's drawing it down?

The i4800's rated shot count assumes a conservative mix of stills with the flash off. Enabling flash for every shot forces the capacitor to recharge from the cell between frames, which adds significant current draw beyond the baseline. Continuous video recording compounds this further — sensor readout, image processing, and display backlight all run simultaneously. Switching the flash to auto rather than forced-on and reducing screen brightness are the two quickest ways to bring actual shot count closer to the cell's capacity rating.

The flash isn't fully recycling between shots near the end of the charge — why?

Flash recycling time increases when cell voltage drops toward the lower end of its discharge curve, typically below 3.5V. At that point, the capacitor recharge current sags because the cell can't sustain the peak draw as efficiently as it can at full charge. The i4800 will often show one or two bars remaining on the indicator while this is already happening. Recharge the battery before the indicator hits the final bar to keep flash recycle times consistent.

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