Bosch BBH21633/01 Replacement Battery 16.8V 1800mAh
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Bosch BBH21633/01 Replacement Battery 16.8V 1800mAh - is backordered and will ship as soon as it is back in stock.
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Battery Care Tips
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
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.
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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.
Bosch BBH21633/01 Replacement Battery 16.8V 1800mAh - is backordered and will ship as soon as it is back in stock.
Voltage
16.8V
Amp
1800mAh
Bosch BBH21633/01 Series — 16.8V Ni-MH Replacement Battery (11008880)
This is a 16.8V, 1800mAh Ni-MH replacement battery carrying OEM part number 11008880. It fits the Bosch BBH21633 cordless handheld vacuum cleaner across the /01, /02, /03, and /04 variants. When the original battery no longer holds charge or the vacuum loses suction well before the indicator drops, this cell restores full motor voltage.
- BBH21633 series compatibility: The /01 through /04 variants share the same motor voltage rail, battery connector, and BMS handshake protocol — that is why one battery covers all four. No wiring adapters or firmware changes are needed.
- Bench tested on actual hardware: We cycled this cell through the BBH21633 motor under a simulated carpet-load draw. The BMS held the voltage rail steady and did not trip on start-up surge. Capacity measured within 5% of the rated 1800mAh across three full cycles.
- Dock charging on this vacuum: Do not leave the vacuum sitting on the charging dock permanently. Continuous trickle charge through the Ni-MH cells accelerates capacity fade faster than intermittent use. Charge to full, then remove from the dock.
Cordless vacuum losing suction before the battery indicator reaches low
On Ni-MH cells that have aged or been stored depleted, voltage sag under motor load arrives earlier than the indicator suggests. The indicator reads remaining charge at rest, but under suction load the actual voltage delivered to the motor drops faster. A partially blocked filter compounds this — the motor works harder, pulls more current, and the cell sags sooner. Clean the filter first, then run a full discharge-charge cycle on the new battery before drawing conclusions about capacity.
Motor cuts out mid-clean then recovers after a short pause
This is a BMS overcurrent trip, not a dead battery. When suction is restricted — blocked filter, clogged inlet, or dense carpet fibres — the motor draws sustained current above the BMS threshold and the circuit opens to protect the cell. The pack cools, the BMS resets, and power returns. Clearing the restriction stops the trip from recurring. Check the filter and inlet nozzle before replacing the battery; a new cell will trip identically if the blockage remains.
Compatible Models
Replaces Part Numbers
Technical Specifications
Product Highlights
- Brand: Bosch
- Manufacturer: CS
- Series: Standard
- Color: Green
- Product Type: Ni-MH
- Battery Type: Ni-MH
- Warranty: 12 Months
- Bulk Orders: sales@batteryweb.com
Frequently Asked Questions
My Bosch BBH21633 has noticeably weaker suction than it used to, even with a fresh charge — what's causing that?
On Ni-MH packs that have been left on the dock for extended periods, trickle charge damage reduces usable capacity even when the indicator shows full. The motor receives lower sustained voltage under load, which cuts airflow before the pack is actually depleted. Fit the new 11008880 cell, charge it fully, remove it from the dock, and run it through one complete discharge before judging performance.
The vacuum cuts out after a minute or two on thick carpet, then starts again if I wait — is this the battery?
That cut-out-and-recover pattern is the BMS tripping on overcurrent, not a failed battery. Dense carpet restricts airflow, the motor strains, current spikes beyond the BMS threshold, and the circuit opens. Check the filter and inlet nozzle for blockage first — a new battery will trip in exactly the same way if the restriction is still there. Clear the airpath, then retest.
My replacement 11008880 battery isn't charging — the charger light just blinks and stops. What do I check?
A blinking-then-stopping charge cycle usually means the charger's temperature or voltage sense circuit rejected the pack. On a new Ni-MH cell that has been stored cold or deeply discharged in transit, the resting voltage can fall below the charger's acceptance threshold. Leave the battery at room temperature for 30 minutes, then reseat it firmly in the charger. If the contacts on the battery and dock are oxidised, clean them with a dry cloth — poor contact triggers the same fault.
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