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Kruger&Matz KM0416 Replacement Battery 3.7V 1600mAh BP-4C-I

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From $26.99 USD $33.99
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Fits Kruger&Matz KM0416 smartphone; replaces OEM part number BP-4C-I battery.
3.7V and 1600mAh capacity restores full runtime on the KM0416 after the original cell degrades.
Connector type and orientation match the OEM slot; no modification needed for physical installation.
We bench tested the cell under discharge load; BMS voltage regulation held steady across the curve.
On first use after installation, disable fast charging for one complete discharge-charge cycle so the fuel gauge IC recalibrates against the new cell's discharge profile before high-current charging resumes.
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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.

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: 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

Kruger&Matz KM0416 — 3.7V Li-ion Replacement Battery (BP-4C-I)

This is a 3.7V, 1600mAh Li-ion cell (OEM part BP-4C-I) for the Kruger&Matz KM0416 smartphone. It replaces the original battery when capacity has dropped or the cell has failed outright. Capacity and voltage match the original specification exactly.

  • KM0416 fit confirmation: The BP-4C-I connector pinout and physical dimensions match the KM0416 battery bay. The BMS handshake voltage and charge termination thresholds align with what the KM0416 charge IC expects — no modification needed.
  • Bench tested on actual hardware: We cycled this cell through charge and discharge under load conditions representative of the KM0416's modem and display draw. The BMS held cutoff correctly at both ends of the voltage window, and charge termination triggered cleanly without overrun.
  • Fuel gauge recalibration on first use: On first use after installation, disable fast charging and run one full discharge-charge cycle before enabling it again. The KM0416's fuel gauge IC calibrated its coulomb counter to the old cell's discharge curve — giving it one clean cycle on the new cell corrects that mapping before high-current charging begins.

Sudden shutdown at 20–30% on the KM0416 after a cell swap

A new Li-ion cell has a slightly different internal resistance profile than the worn cell it replaces. Under peak load — modem transmission, screen at full brightness — the KM0416 can pull enough current to cause a momentary voltage sag on a new, uncalibrated cell. The fuel gauge IC still shows 20–30% remaining, but the instantaneous voltage drop crosses the hardware shutdown threshold. One full discharge-charge cycle with no fast charging lets the coulomb counter re-map the new cell's actual discharge curve, and these shutdowns stop.

KM0416 not powering on after the replacement battery sat in storage

Li-ion cells self-discharge in storage, and if the BP-4C-I cell dropped below approximately 2.5V before installation, the BMS will have entered a lockout state to prevent damage. The phone will show no response — no charging indicator, no boot. Connect the phone to a wall charger rated at least 5V/1A and leave it for 15–20 minutes without attempting to power it on. The BMS recovery circuit needs a trickle current to bring the cell back above the lockout threshold before normal charging can resume.

Compatible Models

KM0416

Replaces Part Numbers

BP-4C-I

Technical Specifications

Voltage3.7V
Amp Hours1600mAh
Capacity1600mAh
Rate5.92Wh
Gross Weight100g /3.53 oz
Approximate Weight100g /3.53 oz

Product Highlights

  • Brand: Kruger&Matz
  • 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

My KM0416 shows a steady percentage for ages then drops 15% in seconds — is the new battery faulty?

The cell itself is fine. The fuel gauge IC on the KM0416 is still using the discharge curve it mapped to the old, degraded cell. On a fresh cell, that curve is wrong, so the percentage reading stalls and then snaps to correct itself when the voltage hits a known reference point. Run one complete discharge down to auto-shutdown, then charge to 100% without interruption — the coulomb counter resets against the new cell's actual profile, and the percentage readout stabilises.

Fast charging stopped working after I fitted the new BP-4C-I — the phone only trickle charges now.

This is normal on the first cycle after a cell swap. The KM0416's charge IC validates the BMS handshake before enabling high-current charging, and on a brand-new cell it defaults to slow charge until it completes one full cycle. Charge the phone to 100% at standard speed, let it discharge naturally to around 10%, then charge again — fast charging typically re-enables on this second charge cycle once the charge IC confirms the BMS is responding correctly.

The KM0416 gets noticeably warm near the battery compartment while charging the new cell — is that normal?

Some warmth is expected during the first few charge cycles on a new cell. A fresh high-impedance Li-ion cell dissipates slightly more energy as heat until the internal resistance settles after initial cycling. If the phone is warm to the touch but not hot, that is within normal range. If it becomes uncomfortably hot or the phone throttles performance, remove it from the charger, let it cool to room temperature, and retry charging at 5V/1A from a wall adapter rather than a USB hub.

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