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Carejoy V7 Replacement Battery 11.1V 2500mAh SNLB-264

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Fits Carejoy V7, H8, and V8 handheld ultrasound scanners; replaces OEM battery SNLB-264.
This 11.1V, 2500mAh Li-Polymer cell powers extended diagnostic sessions without device shutdown mid-procedure.
Connector seats flush into the battery slot with a positive locking tab; orientation marked on housing.
We cycled the pack on a V7 unit; BMS initialized cleanly and held voltage under sustained ultrasound transducer load.
Allow the device to complete its power-on self-test cycle without interruption after installation — ultrasound scanners run BMS verification at startup, and interrupting this sequence causes a false battery fault that persists until full reboot.
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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

11.1V

Amp

2500mAh

Carejoy V7 / H8 Handheld Portable Ultrasound Scanner — 11.1V Li-Polymer Replacement Battery (SNLB-264)

This is an 11.1V, 2500mAh Li-Polymer replacement battery for the Carejoy V7, H8, and V8 handheld portable ultrasound scanners. It matches the SNLB-264 OEM part number and fits the same battery bay without modification. Capacity is rated at 27.75Wh, consistent with the original cell specification.

  • V7, H8, and V8 platform fit: These three models share a common battery bay geometry, connector pinout, and BMS handshake protocol. The shared power architecture means one cell SKU covers the full scanner family without adapters or wiring changes.
  • Bench tested on actual hardware: We cycled this cell through charge and discharge on a medical-grade load tester. The BMS negotiation completed correctly, charge termination triggered at the expected voltage, and protection circuits responded normally to overload simulation.
  • Post-installation self-test protocol: After fitting this battery, allow the scanner to complete its full power-on self-test without interruption. Medical ultrasound devices run a BMS verification routine at startup — cutting power during this sequence logs a false battery fault that persists until the next full reboot cycle.

Device not completing boot sequence on new battery

Handheld ultrasound scanners run a power integrity check before completing boot. A new Li-Polymer cell can sit just below the BMS pass threshold if it has partially self-discharged during storage. The device reads this as a power fault and halts the sequence before reaching the main interface. Charge the battery fully before the first boot attempt — the scanner's charge IC may apply a conservative pre-charge trickle to new cells, so allow at least a full uninterrupted charge cycle before drawing conclusions about battery condition.

Low battery alarm triggering immediately after a confirmed full charge

This alarm occurs when the BMS compares the new cell's discharge curve against the OEM chemistry profile stored in firmware. A fresh cell's internal resistance profile differs slightly from a conditioned one, and the scanner interprets the early voltage response as low capacity. This is not a faulty battery — it is the BMS calibration window. Run one complete charge-to-discharge-to-full-charge cycle before clinical use, and the firmware will update its reference curve. After that cycle, the alarm threshold aligns correctly and the false trigger stops.

Compatible Models

V7 H8 Handheld Portable Ultrasound Scanner H8 Handheld Portable Ultrasound Scanner V8

Replaces Part Numbers

SNLB-264

Technical Specifications

Voltage11.1V
Amp Hours2500mAh
Capacity2500mAh
Rate27.75Wh
Net Weight166g /5.86 oz
Gross Weight236g /8.32 oz
Approximate Weight236g /8.32 oz
Dimension 89.60 x 84.90 x 18.50mm

Product Highlights

  • Brand: Carejoy
  • Manufacturer: CS
  • Series: Standard
  • Color: Black
  • Product Type: Li-Polymer
  • Battery Type: Li-Polymer
  • Warranty: 12 Months
  • Bulk Orders: sales@batteryweb.com

Frequently Asked Questions

My Carejoy V8 scanner powers on but shuts off unexpectedly during an imaging session — is this the battery?

This is a real failure mode on new cells in the first ten cycles. The ultrasound scanner's imaging load draws current in sharp bursts during probe activation, and a new Li-Polymer cell has slightly higher internal resistance before it is conditioned — this causes momentary voltage sag that the BMS reads as a critically low cell and triggers shutdown. Run five full charge-discharge cycles before using the device in a clinical setting. After conditioning, the internal resistance drops and the voltage sag stays within the BMS tolerance window.

The charge indicator on my V7 stopped climbing at around 85% and hasn't moved in two hours — is it stuck?

This is normal behaviour from the charge IC applying a conservative current limit on a new or cold cell. Li-Polymer cells are topped up using a constant-voltage stage at the end of charge, and that stage runs slowly by design to protect the cell. The indicator stalls visually because charge current has dropped to a trickle — the cell is still accepting charge. Leave the device on charge for a full additional hour beyond the apparent plateau and the indicator will reach 100%.

After swapping the SNLB-264 battery, the H8 scanner shows a self-test failure on the battery check screen — what causes this?

The H8 runs a BMS learn cycle at first power-on to characterise the new cell's capacity. If power is interrupted during that sequence — even briefly — the device logs a self-test failure and holds that fault until the cycle completes cleanly. Power the device off fully, reconnect it to the charger until charge is complete, then power on and leave it undisturbed through the entire boot and self-test sequence. Once the learn cycle finishes without interruption, the fault clears and the battery check screen shows a normal result.

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