Motorola’s $1,599 Signature 27 gets a huge battery, then complicates the charging drawer
The predecessor keeps the same rated wired and wireless speeds; the bigger cell is the clearest hardware change.
A $1,599 phone with a 7,000 mAh battery sounds ready to rescue a long day. Your collection of charging stands would like a word.
The Motorola Signature 27 is headed to the US on November 19, according to 9to5Google’s launch report. The report includes information Motorola supplied directly about charging: up to 50W wirelessly on its own charger, apparently limited to 15W on other equipment, with no apparent Qi2 support. That wording leaves a compatibility question for anyone whose desk already has magnetic charging accessories.
Motorola’s own page confirms the broad hardware attraction: the large cell, a 6.8-inch display with up to 12,000-nit peak brightness, and 90W wired charging. The brightness footnote restricts that figure to “specific scenarios” in lab data. It is not a promise that every white email becomes a portable sun.
The battery is the cleanest comparison with the previous Signature. Its 5,200 mAh becomes 7,000 mAh, an increase of 1,800 mAh, or about 35% in nominal capacity. That calculation is 1,800 divided by 5,200. It does not claim 35% longer runtime; screens, processors, radio conditions and usage all get a vote.
The charging table is more sobering. The predecessor already offered the same maximum wired and wireless wattages. A bigger battery with an unchanged power rating does not automatically refill in the same time. Maximum wattage also describes a capability under the right conditions, rather than a flat charging rate from empty to full.
| Charging decision | Signature 27 | Previous Signature | iPhone 18 Pro | Galaxy S26 Ultra |
|---|---|---|---|---|
| Published maximum wireless power | Up to 50W with Motorola charger | Up to 50W | Up to 25W Qi2/MagSafe | Up to 25W |
| Compatibility detail | 15W elsewhere and no apparent Qi2, per Motorola communication reported by 9to5Google | Motorola TurboPower wireless | Built-in magnet array | Samsung specifies compatible charging equipment |
The predecessor figures come from Motorola. The rival ratings come from Apple’s iPhone 18 Pro specifications and Samsung’s S26 support comparison. Those are advertised maximum powers, not a measured race. A Galaxy S26 Ultra or iPhone 18 Pro can still charge differently as temperature and battery level change.
The software promise needs the same care. Motorola’s footnote describes seven OS updates and up to seven years of security updates from global launch, with variation by market, provider and model. That does not supply a patch-delivery calendar. Someone managing several phones needs to know when a fix arrives, as well as how many future years are printed on the box.
For a buyer who spends long days away from power, extra capacity could outweigh a different charging arrangement. Someone already invested in magnetic stands has another cost to check before trading in a working phone. The unresolved bit is the exact accessory compatibility at launch; the ambitious specifications do not settle that everyday desk test.
Another charger for the drawer.