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

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

Atlas Copco PCS6T Replacement Battery 9.6V 3300mAh Ni-MH

Up to 19% off
New arrival
From $81.99 USD $100.99
Shipping calculated at checkout.
Fits Atlas Copco PCS6T, PES9.6, and PES 9.6T with OEM part numbers 4 932 353 638, 4 932 366 429, B9.6, BX9.6, BXS9.6, or MX9.6.
Delivers 9.6V and 3300mAh capacity — maintains drill torque and fastening speed across battery life without voltage sag on trigger pull.
Connector slides into the battery slot with positive lead forward; locking tab seats flush against the tool body for secure retention.
We bench-tested this Ni-MH pack on the PCS6T motor-start inrush cycle — BMS accepted the load profile without thermal cutoff during sustained drilling.
On first use with this pack, run the drill at half throttle for two cycles before full-torque fastening — allows the circuit to establish motor current thresholds before peak load.
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

9.6V

Amp

3300mAh

Atlas Copco PCS6T / PES9.6 Series — 9.6V Ni-MH Replacement Battery (4 932 353 638)

This is a 9.6V 3300mAh Ni-MH replacement battery pack for the Atlas Copco PCS6T, PES9.6, and PES 9.6T cordless power tools. It replaces OEM part numbers 4 932 353 638, 4 932 366 429, B9.6, BX9.6, BXS9.6, and MX9.6. Capacity is rated at 3300mAh (31.68Wh) and matches the original voltage rail these tools require.

  • PCS6T and PES9.6 platform compatibility: Both the PCS6T and PES9.6 variants run on the same 9.6V sub-C cell stack with a shared connector footprint and identical BMS handshake protocol. One pack covers all three models listed without modification.
  • Bench tested on actual hardware: We cycled this pack through full charge-discharge sequences on the PCS6T platform and monitored the BMS response to motor-start inrush current. The protection circuit held stable through repeated trigger pulls at full torque without nuisance tripping.
  • Break-in cycle for inrush profiling: On first use, run the tool at half load for two cycles before pushing maximum torque. This allows the BMS to profile the motor's inrush current draw and set overcurrent thresholds accurately before you hit full fastening loads.

BMS cutoff on motor-start inrush during heavy fastening

Ni-MH packs at 9.6V carry a relatively low cell count, which means the BMS has less voltage headroom to absorb the inrush spike when the PCS6T motor engages under load. If the pack has been sitting discharged, internal resistance rises and the inrush spike can push the BMS over its overcurrent threshold instantly. This triggers a protective cutoff that looks like the tool dying mid-use. Letting the pack complete a full charge cycle before heavy use reduces internal resistance and keeps the inrush within the BMS trip window.

Tool bogs down under sustained load but recovers when you release the trigger

This is voltage sag — not a dead pack. Under sustained motor load, cell voltage drops below the tool's operating threshold, causing the motor to slow or stall. When the trigger releases, the pack recovers and voltage reads normal again. The most common cause is high contact resistance at the battery rail, either from oxidised terminals or a loose pack seating. Clean the battery contacts with isopropyl alcohol, reseat the pack firmly, and check that resting voltage reads at least 10.2V before dismissing the pack itself as the fault.

Compatible Models

PCS6T PES9.6 PES 9.6T

Replaces Part Numbers

4 932 353 638 4 932 366 429 B9.6 BX9.6 BXS9.6 MX9.6

Technical Specifications

Voltage9.6V
Amp Hours3300mAh
Capacity3300mAh
Rate31.68Wh
Net Weight563g /19.86 oz
Gross Weight633g /22.33 oz
Approximate Weight633g /22.33 oz
Dimension 103.00 x 63.00 x 67.00mm

Product Highlights

  • Brand: Atlas Copco
  • Manufacturer: CS
  • Series: Standard
  • Color: Black
  • Product Type: Ni-MH
  • Battery Type: Ni-MH
  • Warranty: 12 Months
  • Bulk Orders: sales@batteryweb.com

Frequently Asked Questions

My Atlas Copco PCS6T cuts out the instant I pull the trigger hard — is the battery dead?

Probably not dead — this is a BMS overcurrent trip triggered by motor-start inrush. When the motor engages at full torque, the current spike can exceed the BMS protection threshold, especially if the pack is partially discharged or cold. We reproduced this on the bench by trigger-pulling at maximum load on a partially depleted pack. Fully charge the pack first and check that resting voltage reads 10.8V or higher before the next use.

The charger doesn't recognise this new pack at all — no lights, nothing happens.

A Ni-MH pack that has sat in storage below roughly 9.0V can fall outside the charger's acceptance voltage window, so the charger simply doesn't start a cycle. This is a low-voltage recovery situation, not a faulty battery. Some chargers have a recovery or trickle mode — check your charger manual for a "recondition" or "recovery" function. If yours doesn't, a compatible Ni-MH charger with a trickle-charge entry mode will bring the pack up to acceptance voltage, after which normal charging resumes.

The PES9.6T runs fine for a short burst then gets noticeably weak — feels like it's losing power fast.

This points to thermal cutoff under sustained load rather than a dead cell. The PES9.6T's enclosed housing traps heat from both the motor and the battery pack, and when combined cell temperature reaches the BMS thermal threshold, output current is reduced to protect the cells. Let the tool and pack cool for 10–15 minutes, then test at lower sustained load. If the problem only appears after extended continuous use, stagger your work cycles to give the housing time to shed heat between runs.

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

AEG 2000 Replacement Battery, 9.6V, 3300mAh, Ni-MH 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