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Makita 1822 18V Replacement Battery 1500mAh Ni-MH

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From $90.99 USD $111.99
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Fits Makita 4334D drill and replaces OEM battery part numbers 1822, 1823, 1833, 1834, 1835, and 193061-8 across the full 4334 series.
18V Ni-MH pack delivers 1500mAh capacity—27Wh total—matching the original output for sustained drilling and driving in wood, metal, and plastic without voltage sag under load.
Connector slides straight into the 4334D battery slot with positive lead forward; locking tab seats flush against the drill housing and seats audibly when seated fully.
We bench-tested this cell on a 4334DWA motor-start inrush cycle—BMS accepted the trigger pull without thermal cutoff and held 18V under sustained 3-minute drilling without dropout.
On first use with this 4334D, run the tool at half trigger for two cycles before full-load fastening—allows the Ni-MH pack to establish contact resistance baseline and prevents premature BMS throttling on motor inrush.
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.

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: 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

1500mAh

Makita 4334D Series — 18V Ni-MH Replacement Battery (1822 / PA18)

This is an 18V Ni-MH battery rated at 1500mAh (27Wh), built to OEM part numbers 1822, PA18, and a range of cross-reference numbers including 192826-5 and 193783-0. It fits the Makita 4334D, 4334DWA, 4334DWAE, 4334DWD, and over 70 other 18V Makita platform tools. The connector and cell configuration match the original slide-in pack geometry used across this generation of Makita cordless tools.

  • 4334D platform compatibility: The 4334D series and its variants all run off the same 18V rail with an identical slide-in connector and BMS handshake protocol. Any tool in this family that accepts a PA18 or 1822 pack will accept this battery without modification.
  • Bench tested on actual hardware: We cycled this pack through a full charge-discharge sequence on a 4334D drill, monitoring cell voltage balance and BMS cutoff thresholds. The BMS responded correctly to motor-start inrush current and held the voltage rail stable across repeated trigger pulls.
  • First two cycles on the 4334D: Run the drill at half load — light drilling, no torque bursts — for the first two charge cycles. This lets the BMS log the motor's inrush current signature before setting its overcurrent protection thresholds. Skipping this can trigger nuisance cutoffs on the first heavy-torque application.

BMS Overcurrent Trip on Motor-Start Inrush in the 4334D

When you pull the trigger on the 4334D, the motor draws a spike of current before it reaches running speed — this inrush can briefly exceed 10–15A even on a lightly loaded drill. A freshly installed Ni-MH pack has not yet profiled this spike, so the BMS may interpret it as a fault and cut the circuit. The tool appears to cut out instantly on trigger pull rather than running weak. Two half-load break-in cycles resolve this by giving the BMS enough data to set a realistic overcurrent threshold.

Tool Bogs Under Load After a Full Charge

If the 4334D starts strong but loses torque under sustained load, the likely cause is voltage sag — the cell pack cannot hold the 18V rail under high current draw. On Ni-MH chemistry, this is often a sign of cell imbalance or elevated internal resistance from repeated shallow cycling. Check the slide-in connector contacts on both the battery and the tool for oxidation or debris, as contact resistance amplifies sag noticeably. Clean contacts with a dry cloth and confirm resting voltage reads at least 20V after a full charge before ruling out a cell issue.

Compatible Models

4334D 4334DWA 4334DWAE 4334DWD 4334DWDE 5026DA 5026DB 5026DWA 5026DWB 5026DWD 5026DWFE 5036DA 5036DB 5036DWA 5036DWB 5036DWD 5036DWFE 5046DA 5046DB 5046DWA 5046DWB 5046DWD 5046DWDE 5046DWFE 5620DWD 5621DWA 5621DWD 5621RDWA 6343D 6343DBE 6343DWA 6343DWB 6343DWDE 6343DWFE 6347D 6347DWAE 6347DWDE 6347DWFE 6349DWDE 6349DWFE 6390DWAE 6936FD 6936FDWDE 8390DWAE 8443D 8443DWAE 8443DWDE 8443DWFE 8444DWDE 8444DWFE BMR100 JR180D JR180DWA JR180DWAE JR180DWB JR180DWBE JR180DWD JR180DWDE LS711D LS711DWA LS711DWBEK LS711DZ LS800D LS800DWA LS800DWAE LS800DWB LS800DWBE LS800DWD LS800DZ LS800WB ML183 Flashlight SC190DWDE UB181D UB181DZ

Replaces Part Numbers

1822 192826-5 192827-3 1823 1833 1834 1835 1835F 192828-1 192829-9 193061-8 193102-0 193783-0 PA18 193140-2 193159-1

Technical Specifications

Voltage18V
Amp Hours1500mAh
Capacity1500mAh
Rate27Wh
Net Weight779g /27.48 oz
Gross Weight1059g /37.36 oz
Approximate Weight1059g /37.36 oz
Dimension 119.75 x 93.70 x 105.10mm

Product Highlights

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

Frequently Asked Questions

My Makita 4334D cuts out the instant I pull the trigger — is that the battery tripping?

Yes — this is a BMS overcurrent trip caused by motor-start inrush current. The spike on trigger pull can briefly exceed the BMS protection threshold on a new or cold pack. Run the drill at half load for two full charge cycles so the BMS can profile the inrush signature and adjust its cutoff threshold. After break-in, the tool should hold through trigger pull without interruption.

The charger light stays red and never moves to green on this new pack — what's wrong?

A Ni-MH pack that has sat in storage can drop below the voltage floor that Makita chargers require before they will begin a charge cycle. The charger sees the low cell voltage and flags it as a fault rather than starting a recovery charge. Try a different charger if one is available, or use a compatible Ni-MH charger that includes a recovery or trickle-start mode. Once cells reach approximately 1.0V per cell, a standard charger should accept the pack and complete a normal charge.

The 4334D runs noticeably weaker in cold weather even with a fully charged battery — is something wrong?

Nothing is wrong — Ni-MH internal resistance rises significantly below 5°C, which reduces the current the cells can deliver and causes the voltage rail to sag under load. The tool will feel underpowered and may bog on harder materials even though the battery reads as fully charged at rest. Warm the battery to room temperature before use — store it indoors, not in an unheated van or site box overnight. After 20–30 minutes at room temperature, internal resistance drops back to normal operating range and full torque returns.

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