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Maglite ARXX075 Replacement Battery 6V 5000mAh Ni-MH

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From $80.99 USD $99.99
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Fits Maglite ARXX075 and MA5 series flashlights; replaces OEM part numbers ARXX075U, ARX235, and 108-000-817.
6V, 5000mAh Ni-MH chemistry delivers full brightness output through standard and turbo modes without early cutoff.
Cylindrical cell pack slides into Maglite tube slot with keyed connector orientation; locking tab seats flush against contact plate.
Bench testing showed steady voltage ramp on first charge cycle with no BMS fault codes; cell balanced across discharge phases.
Replace all cells in multi-cell lights simultaneously from the same batch — mixing old and new packs causes the weaker cell to drain first under turbo-mode current draw.
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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.

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

6V

Amp

5000mAh

Maglite ARXX075 / ARX235 Series — 6V Ni-MH Replacement Battery (ARXX075)

This is a 6V, 5000mAh Ni-MH rechargeable battery for the Maglite ARXX075, ARX235, and MA5 / ML500 rechargeable flashlight series. It slots into the battery tube where the original multi-cell Ni-MH pack sits. Capacity comes from the product data: 5000mAh / 30Wh.

  • ARXX075, ARX235, MA5, and ML500 compatibility: These models share the same 6V battery tube format, connector position, and driver voltage rail. The flashlight driver expects a nominal 6V Ni-MH source — swapping to a different voltage or chemistry trips the driver's input protection and prevents the light from firing.
  • Bench tested on actual hardware: We cycled this pack through the Maglite charger dock and monitored cell balance across charge and discharge. The BMS held termination voltage correctly and the driver did not step down output prematurely during a full discharge run.
  • Multi-cell pack handling: This is a sealed multi-cell assembly — do not mix it with leftover cells from a previous pack. Inserting mismatched cells into any 6V Ni-MH flashlight causes the weakest cell to invert under high-current draw, shortening the pack's cycle life rapidly.

Maglite driver stepping down output before the battery indicator reads low

The Maglite driver monitors input voltage continuously, not just at the end of charge. Ni-MH cells sag under load — the voltage at the driver input drops below the brownout threshold before the average cell voltage suggests the pack is empty. The driver interprets this sag as a low-battery condition and cuts output to protect the LED. An aged or partially degraded pack shows this behaviour earlier in each cycle because internal resistance rises as cells wear.

Flashlight cycling through modes on its own near end of charge

Mode-cycling without touching the switch is a driver brownout symptom, not a switch fault. As Ni-MH voltage collapses under turbo-mode current draw, the driver briefly loses regulation, resets, and re-initialises — cycling back to the first mode in the sequence. Switching to a lower output mode reduces current draw, which reduces voltage sag and stops the cycling. If the pack is fresh and cycling still occurs, measure open-circuit voltage after a full charge: a healthy 6V Ni-MH pack should read 7.2–7.5V off the charger.

Compatible Models

ARXX075 40070149 MA5 ML500 N38AF001A RX1019 9032 ARXX235 S522 RL1019 2019 Mag Charger Lights

Replaces Part Numbers

40070149 108-000-817 108-817 108-000-439 108-439 201701 40070249 ESR4EE3060 ET2600D ML5000 ARX235U 108-000-423 ARXX075U 108-000-815 ARX235 ARX235SE ARXX075 108-000-816 ARXX235

Technical Specifications

Voltage6V
Amp Hours5000mAh
Capacity5000mAh
Rate30Wh
Net Weight464g /16.37 oz
Gross Weight644g /22.72 oz
Approximate Weight644g /22.72 oz
Dimension 183.90 x 32.20 x 32.20mm

Product Highlights

  • Brand: Maglite
  • 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 Maglite is noticeably dimmer on turbo than it used to be, but the battery still holds a charge — what's happening?

Turbo mode draws significantly more current than standard modes, which causes a larger voltage sag across the pack's internal resistance. As Ni-MH cells age, internal resistance climbs — the voltage drop under high current becomes large enough to push the driver into a reduced-output state, even though the pack still delivers adequate voltage at lower draw levels. The battery isn't dead, but it can no longer sustain the voltage the driver needs to hold full turbo output. Charge fully, then check open-circuit voltage: a pack that reads below 7.0V after a full charge is at end of life.

One side of my Maglite battery tube feels warmer than the other after charging — is that normal?

Uneven heat across a sealed Ni-MH pack points to cell imbalance — one group of cells is accepting more charge current than the other, generating excess heat. This happens when cells have drifted apart in capacity, often from a partial discharge cycle that wasn't fully recovered before recharging. Running the flashlight until output clearly dims, then charging fully, forces a deeper equalisation cycle and can reduce the imbalance. If the hot spot persists after two full discharge-charge cycles, replace the pack — an imbalanced Ni-MH assembly degrades the stronger cells alongside the weaker ones.

The Maglite charger light goes green quickly but the flashlight still dims faster than expected — is the charger lying?

Delta-V termination on Ni-MH chargers can trigger early if the pack starts warm or if a weak cell peaks before the rest. The charger sees a voltage peak, calls it done, and goes green — but the pack is only partially charged. Let the flashlight and pack cool to room temperature before charging, then run a full charge from a cool start. If the charger still terminates within the first 30–40 minutes, the pack's capacity has degraded to the point where a replacement is the correct fix.

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