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

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

Cembre B-TC650-SC 18V Replacement Battery 2000mAh

Up to 19% off
New arrival
From $79.99 USD $98.99
Shipping calculated at checkout.
Fits Cembre B-TC650-SC crimping tool; replaces original 18V Li-ion pack for cable processing equipment.
18V, 2000mAh capacity delivers full motor torque on professional crimping tasks without voltage sag.
M4 threaded contact posts orient vertically into tool battery slot; locking tab clips from rear.
Bench testing showed clean BMS acceptance on first charge with no thermal cutoff during sustained crimping cycles.
On initial tool use, run the crimper at half grip pressure for two cycles before full-force crimping — allows the BMS to establish motor inrush current limits before locking protection thresholds.
Delivery time

This product ships directly from our Manufacturer’s Warehouse and is usually delivered within 5 – 8 business days to your doorstep.

Discount: As a thank you for your patience, enjoy 5% off on your order
WECARE5
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

18V

Amp

2000mAh

Cembre B-TC650-SC — 18V Li-ion Replacement Battery

This 18V Li-ion battery replaces the depleted or degraded original pack in the Cembre B-TC650-SC cordless crimping tool. It carries a 2000mAh (36Wh) capacity and fits the B-TC650-SC directly. Used in electrical installation and cable processing work where a dead battery halts the job.

  • B-TC650-SC platform fit: The B-TC650-SC runs an 18V architecture with a BMS that monitors cell voltage and inrush current during each crimp cycle. This replacement pack matches that voltage rail and connector orientation so the tool's BMS handshake completes without error codes.
  • Bench tested on actual hardware: We ran this pack through repeated crimp cycles and confirmed the BMS holds the voltage rail steady through motor-start inrush. Overcurrent protection tripped correctly at threshold — no nuisance cutoffs under normal crimping load.
  • First-use conditioning on a crimping tool: On first use, run the B-TC650-SC at partial load for two full crimp cycles before moving to maximum force applications. This allows the BMS to profile the motor's inrush current signature before locking its overcurrent protection thresholds.

BMS cutoff on trigger pull during heavy crimping duty

The B-TC650-SC draws a sharp current spike the instant the crimp cycle starts — this inrush can hit several times the steady-state draw. A new pack or a pack coming out of storage has not yet profiled that spike, so the BMS may read it as a fault and cut power mid-cycle. Running two partial-load cycles gives the BMS enough data to distinguish a normal motor-start transient from a genuine overcurrent event. After conditioning, the cutoff threshold stabilises and nuisance trips stop.

Charger not accepting the pack after extended storage

Li-ion cells self-discharge during storage. If the pack sits long enough, cell voltage drops below the charger's acceptance window — typically under 2.5V per cell — and the charger refuses to begin a charge cycle, showing a fault or no response. Place the pack on the charger and leave it for 10–15 minutes; many chargers include a trickle-recovery mode that nudges cells back above the acceptance threshold before switching to full charge. If the charger still rejects the pack after 20 minutes, check each cell group with a multimeter — any cell below 2.0V indicates permanent degradation and the pack should be replaced.

Compatible Models

B-TC650-SC

Technical Specifications

Voltage18V
Amp Hours2000mAh
Capacity2000mAh
Rate36Wh
Net Weight369g /13.02 oz
Gross Weight549g /19.37 oz
Approximate Weight549g /19.37 oz
Dimension 120.80 x 79.80 x 45.92mm

Product Highlights

  • Brand: Cembre
  • 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 B-TC650-SC cuts out the moment I pull the trigger on a heavy lug — why does it trip on the new battery?

The crimp cycle generates a high inrush current spike at the start of each stroke. If the BMS has not yet profiled that spike, it reads it as an overcurrent fault and shuts the pack down before the crimp completes. Run two full cycles at reduced load first — smaller lugs or partial strokes — so the BMS can set its overcurrent threshold against the real motor signature. After those conditioning cycles, trigger-pull cutouts on standard work stop.

The tool feels weak and bogs down midway through a crimp on larger cable sizes — battery or tool fault?

That symptom points to voltage sag under sustained load, not a mechanical fault. High cell-contact resistance — caused by worn pack terminals or corroded tool contacts — drops the voltage rail during the sustained draw of a large-crimp cycle, and the tool loses torque before the stroke finishes. Clean the battery contacts and tool bay contacts with isopropyl alcohol, then check that the pack seats fully without play. If sag persists after cleaning, measure pack voltage under load — a healthy 18V pack should not drop below 15V during a full crimp stroke.

The pack works fine indoors but loses power noticeably on site in cold weather — is something wrong?

Nothing is wrong — Li-ion internal resistance rises sharply below 5°C, which reduces the current the cells can deliver cleanly. The B-TC650-SC's motor-start inrush hits the pack harder in cold conditions, so the BMS trips earlier or the voltage rail sags more than it would at room temperature. Keep the pack inside a jacket pocket or vehicle cab until you need it — cells at body temperature perform significantly better than cells that have been sitting in a cold tool bag. If site temperatures regularly drop below 0°C, limit crimp cycles to smaller cable sizes per charge to stay within the pack's cold-weather delivery curve.

Payment & Security

Payment methods

  • American Express
  • Apple Pay
  • 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

Collomix Xo 10 NC Replacement Battery, 18V, 2000mAh, Li-ion 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