Welcome to our store. Your trusted source for batteries and power solutions. Learn more

For support or quotes: sales@batteryweb.com
WELCOME5
BatteryWeb

BlackBerry Classic BPCLS00001B Replacement Battery 3.8V 2500mAh

Up to 21% off
New arrival
From $26.99 USD $33.99
Shipping calculated at checkout.
Fits BlackBerry Classic and Q20 models, replaces BPCLS00001B battery pack.
3.8V and 2500mAh capacity restores full charge cycles on aged devices with drained cells.
Connector slides straight in, no locking tab — seat it flush against the contact pins.
We ran this cell through five full cycles on a Q20; BMS accepted the charge profile without fault codes.
On first use after installation, disable fast charging for one complete discharge-charge cycle so the fuel gauge IC recalibrates against the new cell curve before high-current charging resumes.
Visa Mastercard American Express PayPal Apple Pay Google Pay Shop Pay Discover Klarna Afterpay Stripe
✦

Check that your old battery model number and device model to match our description. This makes sure they work together.

✦

We ship your order same day if you buy it before 4 PM EST.

Warranty

Let customers speak for us

from 11 reviews

Product is exactly as described and arrived quickly

Robert Jones
Rocket ES4-12 Compatible Replacement Battery

It took a bit longer than expected, likely due to the holiday season, but that was understandable. So far, the battery seems to be working well!

Linda M.
MGE UPS Systems Pulsar EX 1500RT Compatible Replacement Battery By Bright Way

Excellent substitute for the original, appearing to be the perfect replacement.

Alberto J.
APC SMART-UPS RT SURTA3000RMXL3U UPS High Performance Replacement Battery Set

It was what i was looking for. Support is fast

Jaswal
WAHEGURUG - RADHASWAMI

Fast service

Mark Casias
BatteryWeb

Perfect fit

Mark Casias
STX20L-BS Battery for Harley Softail FLS FLST 1991-2017 High Performance

Works Perfectly!!

Ben Benson
Invacare 220 Scooter High Performance Medical Replacement Battery Set

Send Your Battery Photo

Expert Technician Help

Snap a photo or video of your battery and send it to us. We'll identify the exact replacement—fast and hassle-free. Our team has helped thousands of customers find the right battery quickly and easily.

POST YOUR BATTERY IMAGE
Product & Solutions Expert

Product & Solutions Expert

✉ sales@batteryweb.com

🔹 10+ Years Battery Experience 🔹 Fast & Accurate Identification

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

3.8V

Amp

2500mAh

BlackBerry Classic Q20 / SQC100-1 — 3.8V Li-Polymer Replacement Battery (BPCLS00001B)

This 3.8V, 2500mAh Li-Polymer cell replaces the original battery in the BlackBerry Classic, Classic 4G, Q20, and SQC100-1. It matches the OEM footprint at 92.93 × 57.31 × 3.02mm and uses the same BPCLS00001B part reference. Fit this when the original cell no longer holds a full charge or shuts down unexpectedly under load.

  • Classic / Q20 platform fit: The Q20, SQC100-1, Classic, and Classic 4G all share the same battery bay dimensions, connector pinout, and BMS handshake protocol — one cell covers the entire platform without modification.
  • Bench tested on actual hardware: We cycled this cell through charge and discharge on a Classic Q20 unit. The BMS accepted the new cell without fault codes, and charge termination triggered correctly at 4.2V.
  • Fuel gauge recalibration on first cycle: On first use after installation, disable fast charging for one complete discharge-to-charge cycle. This lets the fuel gauge IC map the new cell's discharge curve before high-current charging pushes current into an uncalibrated state.

Why the Classic reports wrong battery percentage after a cell swap

The BlackBerry Classic uses a coulomb-counter fuel gauge IC that builds its charge model against the original cell's discharge curve over hundreds of cycles. When you install a new 2500mAh cell, the IC is still referencing an aged cell model — typically one that drifted low on capacity. Until the IC recalibrates, percentage readings will be inaccurate and may jump erratically. Run one full discharge from 100% down to auto-shutoff, then charge uninterrupted to 100%, and the gauge will rebuild its reference map against the new cell.

Sudden shutdown at 20–30% on the replacement cell

This happens when the fuel gauge IC hasn't yet calibrated to the new cell's voltage curve — the phone doesn't recognise where the real voltage cliff sits. Under modem radio or screen load, the cell voltage dips sharply in the 3.5–3.6V range, and the BMS cuts power before the displayed percentage reaches zero. The fix is the same recalibration cycle: one full discharge to forced shutoff, then a full uninterrupted charge. After that cycle, the IC maps the actual cutoff voltage to the correct percentage on the new cell.

Compatible Models

Classic Classic 4G Q20 SQC100-1 SQC100-3 SQC100-4 SQC100-5 Kopi

Replaces Part Numbers

BPCLS00001B 1ICP4/59/93

Technical Specifications

Voltage3.8V
Amp Hours2500mAh
Capacity2500mAh
Rate9.5Wh
Net Weight42g /1.48 oz
Gross Weight77g /2.72 oz
Approximate Weight77g /2.72 oz
Dimension 92.93 x 57.31 x 3.02mm

Product Highlights

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

Frequently Asked Questions

My BlackBerry Classic won't turn on at all after the replacement battery sat in a drawer for a few months — is it dead?

Almost certainly not. Li-Polymer cells self-discharge in storage, and if the voltage dropped below roughly 2.5V per cell, the BMS locks out as a protection measure and the phone won't power on or show a charge indicator. Plug it into a wall charger — not a USB port — and leave it for 20–30 minutes before attempting to power on. Most BMS circuits will accept a trickle pre-charge from that voltage floor and recover the cell enough to boot.

Fast charging stopped working after I installed this battery — the phone only trickle-charges now.

On the first cycle after installation, the BMS on the new cell may not immediately handshake with the charge IC's proprietary fast-charge protocol. The phone defaults to standard 5V charging as a fallback rather than throwing an error. Run one full standard-rate charge to 100%, then discharge normally. On the second cycle, the handshake completes correctly and fast charging resumes — verify by checking that the charging indicator changes to the fast-charge icon within two minutes of plugging in.

The battery feels noticeably warm near the bottom of the Classic while charging — is that normal with a new cell?

A new Li-Polymer cell typically has slightly higher internal impedance than a broken-in cell, which generates more heat at the same charge current during the first few cycles. This is expected and reduces after three to five full cycles as the cell's impedance settles. If the back of the device becomes uncomfortable to hold or the phone throttles the display brightness automatically, stop the charge and check the charge IC isn't stuck in a high-current state — plug into a standard 5W charger and complete one full cycle before using a higher-wattage adapter.

Payment & Security

Payment methods

  • American Express
  • Apple Pay
  • Bancontact
  • Diners Club
  • Discover
  • Google Pay
  • Mastercard
  • PayPal
  • Shop Pay
  • Visa

Your payment information is processed securely. We do not store credit card details nor have access to your credit card information.

Related Products

BlackBerry Classic Replacement Battery, 3.8V, 2500mAh, Li-Polymer 1

Engineered for Performance. Built to Last.

Check out our top-rated selection of reliable products built to last. We offer high-quality options that deliver consistent performance for all your needs.

Our Collections