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Festool CDD9.6 9.6V Ni-MH Compatible Battery 3300mAh

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From $88.99 USD $109.99
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Fits Festool BPH9.6C cordless drill and drivers; replaces OEM part numbers CDD9.6, CCD9.6, CCD9.6ES, CCD9.6FX.
Delivers 9.6V at 3300mAh capacity for sustained fastening and drilling without voltage sag during mid-task motor demand.
Ni-MH cell pack slides into the BPH9.6C slot with positive contacts facing the tool and locking tab seated flush.
Bench tested on the BPH9.6C platform — Ni-MH BMS accepted charge without fault codes and held voltage stable under motor load.
On first use with the BPH9.6C, run the tool at half throttle for two full discharge cycles before full-torque fastening work.
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
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🔹 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.

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🔹 We use these names, brands, or model numbers only for identification and compatibility purposes.

Voltage

9.6V

Amp

3300mAh

Festool BPH9.6C Series — 9.6V Ni-MH Replacement Battery (CDD9.6)

This is a 9.6V Ni-MH battery rated at 3300mAh (31.68Wh), built to replace the original pack in Festool cordless drills and drivers. It fits the BPH9.6C platform along with FSP-487512, FSP-488437, and FSP-490355 among others. OEM part numbers CDD9.6, CCD9.6, CCD9.6ES, and CCD9.6FX all cross to this replacement.

  • BPH9.6C platform fit: These models share the same 9.6V rail, battery connector format, and cell count. The BMS on each communicates the same charge termination signal, so this pack charges and discharges without modification.
  • Bench tested on actual hardware: We ran this pack through charge and discharge cycles on the BPH9.6C platform. The BMS registered correct delta-V cutoff at end of charge and held voltage under motor-start inrush without tripping overcurrent protection.
  • Motor break-in on first use: On the first two cycles, run the drill at half load — moderate torque applications only. This lets the BMS sample the motor's inrush current draw and set its overcurrent threshold accurately before you push the tool to full torque.

BMS overcurrent trip on trigger pull in Festool 9.6V drills

The BPH9.6C motor pulls a spike of current the instant the trigger engages — often two to three times the running current. A new or freshly stored Ni-MH pack has slightly elevated internal resistance, which amplifies the voltage dip at that spike. If the BMS reads the dip as an overcurrent fault, it cuts power immediately and the tool stops before the motor reaches speed. Two break-in cycles at moderate load bring cell resistance down and allow the BMS to calibrate its trip threshold correctly.

Pack gets warm and drill bogs under sustained load

Ni-MH cells generate more heat than Li-ion during high-current discharge, and the BPH9.6C housing gives that heat nowhere to go quickly. Under sustained heavy load — driving long screws or boring large-diameter holes repeatedly — cell temperature climbs and internal resistance rises, which causes voltage sag and the bogging sensation. The thermal cutoff trips if the pack reaches its limit, and the drill stops entirely. Let the pack rest for at least 10 minutes after a thermal cutoff before resuming work, and check that the battery contacts are clean and seating fully to rule out contact resistance adding to the load.

Compatible Models

BPH9.6C FSP-487512 FSP-488437 FSP-490355 FSP-486828 FSP-489257 FSP-490598

Replaces Part Numbers

CDD9.6 CCD9.6 CCD9.6ES CCD9.6FX

Technical Specifications

Voltage9.6V
Amp Hours3300mAh
Capacity3300mAh
Rate31.68Wh
Net Weight587g /20.71 oz
Gross Weight767g /27.06 oz
Approximate Weight767g /27.06 oz
Dimension 165.40 x 84.64 x 54.91mm

Product Highlights

  • Brand: Festool
  • 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 Festool BPH9.6C drill cuts out the instant I pull the trigger on tight fasteners — is that the battery?

That's a BMS overcurrent trip caused by the motor-start inrush current spike. A new or stored Ni-MH pack has elevated internal resistance, which deepens the voltage dip at trigger pull and can cross the BMS trip threshold before the motor reaches speed. Run two cycles at moderate load to bring cell resistance down and let the BMS calibrate. If the problem persists after break-in, clean the battery contacts and confirm the pack is reading 9.6V fully charged before use.

The charger never recognises this pack — it just sits there doing nothing. What's wrong?

Ni-MH packs that have sat in storage can drop below the voltage floor a charger requires to begin a charge cycle — typically around 1.0V per cell, so roughly 9.0V for a 9.6V pack. If the terminal voltage is too low, the charger sees no valid pack and won't start. Try a slow-charge or recovery mode if your charger has one; if not, briefly apply a small external load and then reinsert — this can shake the cells out of the deep-discharge state. Check terminal voltage before reinserting; it needs to be above 9.0V for most standard Festool chargers to initiate.

The drill feels noticeably weaker in winter than it does in a warm workshop — normal for Ni-MH?

Yes. Ni-MH internal resistance rises as temperature drops, and the BPH9.6C motor draws enough current that even a moderate resistance increase causes visible voltage sag under load. Below about 10°C the effect is significant — the drill runs slower and stalls earlier on tough fasteners. Store the battery in a warm space before use and let the tool warm up with light work before tackling full-torque applications. Capacity returns to normal once the cells are back above 15°C.

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