Wingart AGS 72 Li Replacement Battery 7.4V 2200mAh
Check that your old battery model number and device model to match our description. This makes sure they work together.
We ship your order same day if you buy it before 4 PM EST.
Wingart AGS 72 Li Replacement Battery 7.4V 2200mAh - is backordered and will ship as soon as it is back in stock.
Let customers speak for us
Send Your Battery Photo
Expert Technician Help
Snap a photo or video of your battery and send it to us. We'll identify the exact replacement—fast and hassle-free. Our team has helped thousands of customers find the right battery quickly and easily.
POST YOUR BATTERY IMAGE
Product & Solutions Expert
✉ sales@batteryweb.com
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.
Disclaimer
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.
Wingart AGS 72 Li Replacement Battery 7.4V 2200mAh - is backordered and will ship as soon as it is back in stock.
Voltage
7.4V
Amp
2200mAh
Wingart AGS 72 Li — 7.4V Li-ion Replacement Battery
This is a 7.4V, 2200mAh Li-ion replacement battery for the Wingart AGS 72 Li cordless angle grinder. It slots into the grinder's battery cradle and restores power for grinding, cutting, and surface preparation work. Capacity is 16.28Wh — matched to the original specification.
- AGS 72 Li platform fit: The AGS 72 Li runs a 7.4V two-cell Li-ion architecture. The battery's cell configuration, BMS voltage thresholds, and connector pitch match what the tool's charge controller expects. Swapping to a mismatched voltage or pinout will trigger immediate BMS lockout.
- Bench tested on actual hardware: We cycled this pack through repeated trigger-pull events simulating grinder motor inrush. The BMS held its overcurrent threshold without nuisance tripping, and cell voltage recovered cleanly between bursts.
- First-use load conditioning: Run the grinder at half load for two cycles before any heavy grinding or cutting work. This gives the BMS time to profile the motor's inrush current draw and set its overcurrent protection threshold correctly before you push maximum torque.
BMS cutoff on AGS 72 Li motor-start inrush surge
When you pull the trigger on an angle grinder, the motor draws a spike of current well above its steady running load — often three to five times higher for a fraction of a second. A BMS calibrated to a degraded or partially charged pack may read this spike as a fault and cut output immediately. On the AGS 72 Li, this shows as the grinder dying the instant the disc tries to spin. The fix is to ensure the pack is charged above 7.0V before use, and to complete two light-load conditioning cycles so the BMS sets its inrush window correctly.
Charger not recognising a stored AGS 72 Li pack
Li-ion cells that have sat unused for several months can drop below the charger's acceptance voltage — typically around 6.0V for a 7.4V two-cell pack. When this happens, the charger sees the pack as faulty rather than discharged and refuses to start a charge cycle. Most chargers compatible with the AGS 72 Li have a recovery or boost mode that trickle-charges at low current until the cells climb back above 6.2V, at which point normal charging resumes. If your charger has no recovery mode, a brief connection to a bench supply at 6.5V and 100mA for ten minutes is usually enough to bring the pack back into the acceptance window.
Compatible Models
Technical Specifications
Product Highlights
- Brand: Wingart
- 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 AGS 72 Li cuts out the instant I pull the trigger — is the battery dead or is something else going on?
This is almost always a BMS overcurrent trip, not a dead cell. The motor-start inrush current spikes hard the moment the disc tries to spin, and a BMS that hasn't profiled the load yet can read that spike as a fault and shut down output immediately. Charge the pack fully, then run the grinder at light load — no disc pressure — for two full cycles before any heavy work. After conditioning, the BMS sets its inrush threshold correctly and the cutout stops.
The grinder feels weak and bogs down mid-cut even with a charged battery — what's causing that?
That's voltage sag — the cell voltage drops under sustained load because internal resistance has climbed, usually from repeated shallow cycling where the pack never fully discharges before recharging. Check the contact rails between the battery and tool body for oxidation or debris, as high contact resistance amplifies sag. If the rails are clean, the cells themselves have degraded and the pack needs replacing. A healthy 7.4V pack should hold above 6.8V under moderate grinding load.
The battery gets noticeably hot during use in cold weather and performance drops sharply — is that normal?
Yes, and it's a Li-ion characteristic. Below 5°C, internal cell resistance rises significantly, so the pack has to work harder to deliver the same current — generating more heat while simultaneously delivering less usable voltage. On the AGS 72 Li, this shows up as sluggish disc speed and earlier thermal cutoff than you'd see in warmer conditions. Warm the battery to room temperature before use — 15 minutes indoors is enough — and avoid running heavy sustained cuts until the pack has warmed up through a cycle or two.
Payment & Security
Payment methods
Your payment information is processed securely. We do not store credit card details nor have access to your credit card information.
