Philips AT750 Compatible Battery 3.7V 800mAh Li-ion
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Philips AT750 Compatible Battery 3.7V 800mAh Li-ion - is backordered and will ship as soon as it is back in stock.
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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.
Philips AT750 Compatible Battery 3.7V 800mAh Li-ion - is backordered and will ship as soon as it is back in stock.
Voltage
3.7V
Amp
800mAh
Philips AT750 Series — 3.7V Li-ion Replacement Battery (US14500)
This is a 3.7V 800mAh Li-ion cell that fits the Philips AT750, AT751, AT752, AT753, and over 78 additional models in the same shaver range. It replaces the original cell when capacity has degraded from repeated charge cycles. Swapping this cell restores full cordless shaving operation to the device.
- AT750 series compatibility: The AT750 through AT753 share the same motor voltage rail, housing footprint, and connector orientation. All draw from a single 3.7V cell of the US14500 form factor, so one replacement covers the entire range without modification.
- Bench tested on actual hardware: We ran this cell through charge and discharge cycles on the AT750 platform. The BMS accepted the cell without fault codes, held charge correctly across full cycles, and the motor drew cleanly at load without triggering cutoff prematurely.
- Waterproof model charging precaution: Several AT750-series shavers carry an IPX7 waterproof rating. Dry the charging port completely before connecting to the charger — residual moisture bridging the contacts triggers a BMS protection fault that the shaver reports as a dead battery rather than a charging error.
Capacity fade from daily partial charging on the AT750
Many AT750 users charge the shaver daily after a single short use, never running the cell down past 60–70%. Li-ion cells cycled repeatedly in this shallow range see accelerated capacity fade — the usable window narrows over time even though the indicator still shows a full charge. The BMS calibration drifts, so the shaver cuts off while the indicator still reads mid-level. Replacing the cell resets this — but cycling the new cell through at least two full charge-discharge passes before settling into a routine helps the BMS re-calibrate the state-of-charge window accurately.
Motor speed dropping before the low-battery indicator activates
When the original cell ages, internal resistance rises. Under motor load, that resistance causes a voltage sag — the cell can no longer sustain 3.7V at draw, so motor speed falls noticeably before the indicator ever flags low battery. This is not a motor fault. A fresh cell with low internal resistance eliminates the sag and restores consistent motor speed across the full charge. If the issue persists after replacement, check that the replacement cell is reading above 3.6V at rest before fitting it.
Compatible Models
Replaces Part Numbers
Technical Specifications
Product Highlights
- Brand: Philips
- Manufacturer: CS
- Series: Standard
- Color: Green
- Product Type: Li-ion
- Battery Type: Li-ion
- Warranty: 12 Months
- Bulk Orders: sales@batteryweb.com
Frequently Asked Questions
My AT750 shaver charges fine most of the time but won't charge at all after I rinse it — is the battery dead?
This is almost always a BMS protection trip caused by moisture bridging the charging contacts, not a failed battery. The BMS interprets the short-circuit signal across wet contacts as a fault and locks out charging. Let the shaver dry completely — at least a few hours with the port facing down — then attempt charging again. If the charge light returns to normal, the battery is not the issue.
The AT750 dock contacts look clean but the shaver stopped taking a charge — what's causing it?
Cleaning product residue builds up on dock contacts and forms a thin insulating film that breaks the charge circuit even when the contacts appear clean. Wipe both the dock pins and the shaver's charging terminals with a dry cloth or a cotton swab lightly dampened with isopropyl alcohol. Let both surfaces dry fully before reseating the shaver — if charging resumes, the fault was contact oxidation, not the battery.
My AT750 shaver runs warm during longer grooming sessions — is the replacement battery causing that?
Heat during extended use is normal on this platform. The motor and the discharging cell both generate heat inside a compact housing with limited airflow, so surface warmth is expected. A replacement cell running noticeably hotter than the original at the same load points to elevated internal resistance — check that the cell voltage is between 3.6V and 4.2V during use. If the shaver becomes hot enough to be uncomfortable, stop use and allow it to cool to room temperature before continuing.
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