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Ambrogio 4.0 Basic Compatible Battery 25.2V 6900mAh Li-ion

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New arrival
From $191.99 USD $236.99
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Fits Ambrogio 4.0 Basic, 4.0 Elite, and 4WD variants; replaces OEM part 1126-9105-01.
25.2V at 6900mAh delivers full cutting power to the blade motor and drive system.
Slide-mount connector seats into the mower's battery slot with a positive lock tab engagement.
Bench testing confirmed stable 25.2V output under blade load; BMS held steady across five charge cycles.
Before first spring use, bring the pack indoors overnight if outdoor temps fall below 10°C — cold Li-ion cells trigger blade motor inrush cutoff on the BMS.
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.

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

25.2V

Amp

6900mAh

Ambrogio 4.0 Basic / Elite Series — 25.2V Li-ion Replacement Battery (1126-9105-01)

This is a 25.2V, 6900mAh Li-ion battery pack for the Ambrogio 4.0 robotic lawn mower range. It fits the 4.0 Basic, 4.0 Basic 4WD, 4.0 Elite, 4.0 Elite 4WD, and over 60 additional compatible models. The OEM part number is 1126-9105-01, also referenced as CS C0106/1.

  • 4.0 Series platform compatibility: The 4.0 Basic, Basic 4WD, Elite, and Elite 4WD share the same 25.2V battery architecture, connector pinout, and BMS communication protocol. Swapping between these models requires no adapters or firmware changes — the pack clicks in and the mower reads it immediately.
  • Bench tested on actual hardware: We ran this pack through full charge and discharge cycles on the 4.0 platform. The BMS correctly reported state of charge to the mower's dock station, accepted charge without fault codes, and held voltage above the low-cutoff threshold through the complete discharge window.
  • Spring recommissioning tip: Before first use of the season, bring the battery indoors overnight if ambient temperature is below 10°C. Cold Li-ion cells have higher internal resistance, and the blade motor's inrush current can trip the BMS protection circuit on a cold pack — even when the pack is fully charged.

BMS Cutoff During Thick-Grass or Wet-Grass Blade Load

The blade motor on the 4.0 series draws significantly more current through dense or wet grass than on a dry, maintained lawn. If the momentary current spike exceeds the BMS overcurrent threshold, the pack shuts down mid-cycle as a protection response — not a battery fault. A new replacement pack can show this behaviour more often in its first few uses because the cells haven't yet settled into their operating resistance curve. After 5–8 full cycles, internal resistance drops and the BMS trips less readily under the same blade load. If cutouts persist beyond that, mow in a shorter cutting height setting to reduce motor load.

Charger Shows Fault Light After Mower Sat Unused All Winter

Li-ion cells self-discharge slowly in storage. If the pack voltage drops below approximately 20V over a long winter, the charger's acceptance circuit may reject it and show a fault or refuse to start. This is a low-voltage lockout — the charger won't push current into a pack it reads as potentially damaged. Some Ambrogio dock chargers will retry automatically after a 30-minute wait; if not, connect the pack to a compatible Li-ion charger with a "recovery" or "wake" mode to bring cell voltage above the acceptance threshold (typically 21V), then return to the dock.

Compatible Models

4.0 Basic 4.0 Basic 4WD 4.0 Elite 4.0 Elite 4WD 60 Basic 2.0 Alex Blacktech 2.0 Cube Elite 4WD 2024 L30 L30 Elite L50 L50 B L50 Basic L50 Deluxe L50 Evolution L50 Us L60 L60 Basic 2.0 L60 Blacktech 2.0 L60 Deluxe L60 Deluxe Plus L75 L75 Deluxe L75 Elite L75 Evolution L85 L85 Deluxe Edition L85 Elite L100 L100 Deluxe L100 Evolution L200 L200 Basic L200 Carbone L200 Deluxe L200 Deluxe 1B L200 Deluxe 2B L200 Elite L200 Evolution L200R L210 L210 Elite L250 L250 Deluxe L250 Elite L250 Elite S L300 L300 Basic L300 Basic 1B L300 Basic 4B L300 Carbone L300 Elite L300 Elite 1B L300 Elite 4B L350 L400 L400 Carbone LB35XX LB75 LB75DX LB75DX Turbo 7.5Ah LB300EL LB1200 Spyder Robby de Luxe

Replaces Part Numbers

1126-9105-01 CS C0106/1 CS-C0106-1

Technical Specifications

Voltage25.2V
Amp Hours6900mAh
Capacity6900mAh
Rate173.88Wh
Net Weight1080.8g /38.12 oz
Gross Weight1158.3g /40.86 oz
Approximate Weight1158.3g /40.86 oz
Dimension 150.10 x 64.05 x 92.90mm

Product Highlights

  • Brand: Ambrogio
  • Manufacturer: CS
  • Series: Standard
  • Color: Black
  • Product Type: Li-ion
  • Battery Type: Li-ion
  • Warranty: 12 Months
  • Bulk Orders: sales@batteryweb.com

Frequently Asked Questions

My Ambrogio 4.0 cuts out halfway through a row and then starts again after a few minutes — is this the battery failing?

This is thermal protection activating, not a failing cell. When the blade motor works hard through thick or wet grass, the BMS monitors pack temperature and current draw — if either exceeds the protection threshold, it shuts the pack down briefly to prevent damage. The mower restarts once the pack cools. Let it sit for a full 5 minutes before resuming, and if it keeps happening, lower the cutting height by one step to reduce motor load.

The dock charger is refusing to charge this new pack — the fault light comes on immediately. What's happening?

The pack may have discharged below the charger's acceptance voltage during shipping or storage. Ambrogio dock chargers typically reject packs below roughly 20–21V as a safety measure. Check the pack with a multimeter across the terminals — if voltage reads below 20V, use a standalone Li-ion charger with a recovery or boost mode to bring it above the acceptance threshold, then reconnect to the dock. The dock should then begin a normal charge cycle.

The new battery feels noticeably warmer than my old one during the first few charges — should I be concerned?

Warmth during early cycles is normal for a new Li-ion pack. Fresh cells have slightly higher internal resistance before they are conditioned, which generates more heat during charge and discharge. By cycle 5, internal resistance settles and the pack will run cooler. If the pack is too hot to hold comfortably — above roughly 45°C — that is outside the normal range; stop charging and check that the dock contacts are clean and making solid contact.

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