Vancouver XC-141K Replacement Battery 3.7V 1500mAh
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Vancouver XC-141K Replacement Battery 3.7V 1500mAh - 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.
Vancouver XC-141K Replacement Battery 3.7V 1500mAh - is backordered and will ship as soon as it is back in stock.
Voltage
3.7V
Amp
1500mAh
Vancouver XC-141K — 3.7V Li-Polymer Replacement Battery (14-11-28)
This 3.7V, 1500mAh Li-Polymer cell replaces the original battery in the Vancouver XC-141K bicycle light. It matches the OEM part number 14-11-28 and fits the compact cavity of the XC-141K housing. Voltage and capacity figures are taken directly from the product specification — 5.55Wh total energy.
- XC-141K light driver compatibility: The XC-141K uses a constant-current LED driver tuned to a 3.7V Li-Polymer input rail. Swapping to a different chemistry or nominal voltage causes the driver to pull incorrect current, which reduces output or triggers early cutoff. This cell keeps the driver inside its rated input window.
- Bench tested on actual hardware: We cycled this cell through charge and discharge on the XC-141K platform. The BMS accepted charge without interruption, and the driver maintained stable output from full charge down to the low-voltage cutoff threshold — no false low-battery trips during testing.
- Pre-ride charge check: Charge the XC-141K fully before a night ride. The LED driver steps down output power as cell voltage decreases, so a partially charged cell will run at reduced brightness well before the low-battery indicator activates.
Light dimming before the low-battery indicator appears
The XC-141K driver uses a voltage-based step-down curve, not a flat regulation stage. As the cell drops below roughly 3.5V under load, the driver reduces current to the LED to protect the cell from over-discharge. This happens before the low-battery indicator threshold is crossed in firmware. The result is visible dimming that riders often misread as a faulty battery. Starting a ride at full charge — 4.2V — keeps the driver in its full-output range for the entire usable capacity.
USB charging not accepted after a wet ride
Water in the USB port causes the XC-141K to reject charge input — the port's contact resistance rises enough that the charger handshake fails. This is not a battery fault. Allow the port to dry completely, standing the light upright with the port facing down, before attempting to charge again. Once dry, plug in and confirm the charge indicator LED activates within 10 seconds.
Compatible Models
Replaces Part Numbers
Technical Specifications
Product Highlights
- Brand: Vancouver
- 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 XC-141K isn't hitting its rated lumen output even with a new battery — what's wrong?
The XC-141K driver needs the cell voltage close to 4.2V to sustain maximum lumen output. If the replacement cell shipped partially discharged (common with Li-Polymer cells stored during transit), it may not yet be at the voltage the driver needs for full brightness. Charge the light completely before testing output — the driver's top brightness tier only activates above approximately 3.9V under load.
The light runs for a while then cuts off completely with no warning — is the BMS tripping?
Yes — this is a low-voltage cutoff triggered by the cell BMS, not a driver fault. On the XC-141K, running the highest output mode draws significantly more current than standard mode, pulling cell voltage down faster than the low-battery indicator can track. The BMS cuts output hard at the minimum safe cell voltage to prevent damage. Switch to a lower output mode to extend usable capacity between charges, or charge before the ride to start from 4.2V.
After leaving the XC-141K unused for two months, it won't turn on at all — is the battery dead?
Li-Polymer cells self-discharge slowly during storage, and two months is enough for the XC-141K cell to drop below the BMS's minimum re-initialisation voltage. The BMS locks out output as a protection measure. Connect the light to a charger for at least 15–20 minutes — the BMS will accept a trickle charge first, then transition to normal charge current once the cell recovers above approximately 3.0V. If the charge indicator activates, the cell is recovering normally.
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