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Black&Decker PHV1210 Replacement Battery 12V 1800mAh

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From $65.99 USD $81.99
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Fits Black&Decker PHV1210 and PIVOT VAC 12V handheld vacuums; replaces OEM part 90557699.
12V, 1800mAh Ni-MH chemistry delivers consistent voltage output throughout the cleaning cycle without the voltage sag that degrades suction on motor-heavy tasks.
Connector slides straight into the battery slot with a positive locking tab; orientation is keyed — the pack seats only one way.
We bench-tested this cell on the PHV1210 motor load cycle; the BMS remained stable under sustained motor draw with no premature cutoff.
On first use, run short cleaning passes over two cycles before extended full-power sessions — allows the motor controller to establish baseline current thresholds without nuisance shutdowns.
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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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.

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

Voltage

12V

Amp

1800mAh

Black&Decker PHV1210 / Pivot Vac 12V — 12V Ni-MH Replacement Battery (90557699)

This is a 12V, 1800mAh Ni-MH replacement battery for the Black&Decker PHV1210 and Pivot Vac 12V handheld vacuum. It slots directly into the same battery compartment as the original pack and connects to the same charging contacts. Capacity comes from the product specification: 1800mAh (21.6Wh).

  • PHV1210 and Pivot Vac 12V compatibility: Both models share the same 12V battery rail, connector footprint, and charge contact layout. The OEM part number 90557699 covers the full platform — no adapter or wiring change needed.
  • Bench tested on actual hardware: We cycled this pack through the Black&Decker charging base and confirmed the charge termination circuit responded correctly. The Ni-MH delta-V cutoff triggered at the expected point, and the pack held voltage under suction motor load without dropping below the 10V floor.
  • Ni-MH cycle care for handheld vacuum use: Ni-MH cells in this format are sensitive to shallow cycling. Run the vacuum until suction noticeably drops before recharging — repeated top-ups from a half-charged state accelerate voltage depression in Ni-MH chemistry faster than in lithium formats.

Voltage depression in Ni-MH packs — why the PHV1210 loses suction over time

Ni-MH cells develop a memory-like effect called voltage depression when cycled repeatedly without full discharge. The pack reads as charged but delivers lower voltage under load — the suction motor sees less than 12V and runs weak. This is not a dead battery; it is a cell that has been conditioned to a narrow voltage window. Running the vacuum to full cutoff before recharging resets this pattern over two to three cycles and restores usable voltage to above 11V under load.

Charger light stays solid without switching to green after fitting a new pack

A new or stored Ni-MH pack can sit below the charger's acceptance voltage threshold if cells have self-discharged during shipping or storage. The charger detects an unexpected voltage profile and holds in a standby state instead of entering the bulk charge phase. Place the pack on the charger and leave it undisturbed for 20 to 30 minutes — the charger's trickle pre-charge circuit will bring cells up to 9.6V, at which point the standard charge cycle initiates. If the light does not change after 45 minutes, check the contact pins on the vacuum's battery bay for oxidation and clean with a dry cloth.

Compatible Models

PHV1210 PIVOT VAC 12V

Replaces Part Numbers

90557699

Technical Specifications

Voltage12V
Amp Hours1800mAh
Capacity1800mAh
Rate21.6Wh
Net Weight450g /15.87 oz
Gross Weight520g /18.34 oz
Approximate Weight520g /18.34 oz
Dimension 91.20 x 86.80 x 42.50mm

Product Highlights

  • Brand: Black&Decker
  • 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 PHV1210 cuts out immediately when I press the power button — could it be the battery?

This is usually the Ni-MH pack sitting below the minimum operating voltage after deep self-discharge — not a failed battery. Put the pack on the charger and let it trickle-charge for at least 30 minutes before trying to power the vacuum again. The charging base needs to see cell voltage above roughly 9.6V before it enters full charge mode. Once a full charge cycle completes, the vacuum should power on and hold under load.

The vacuum runs fine for a few seconds then the suction drops noticeably — what is happening?

This is voltage sag under sustained motor load — common in Ni-MH packs that have been repeatedly shallow-cycled. The cells charge to 12V but can't maintain that voltage once the suction motor draws continuous current. Run the vacuum to full cutoff (no suction at all) before each recharge for three to four consecutive cycles. This reconditioning process works the cells through their full capacity range and typically restores mid-cycle voltage above 10.5V under load.

The battery feels warm after charging but the vacuum still feels weak — is the pack defective?

Warmth after a Ni-MH charge cycle is normal — the delta-V termination circuit relies on detecting a slight temperature rise to confirm full charge. Weakness after a warm charge usually points to voltage depression, not a fault. Discharge the pack fully by running the vacuum until it stops completely, then recharge from flat. If the suction is still noticeably weaker than expected after three full discharge-recharge cycles, check that the battery contacts in the Pivot Vac housing are clean and making firm contact — corroded pins add resistance and drop the voltage the motor actually sees.

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