Virtually all laptops sold today feature batteries no larger than 99.99 watt-hours for one simple reason: anything bigger is banned from boarding flights (there are some exceptions for batteries up to 160Wh, but those require special approvals). Yet, Energizer β known for batteries and brick-sized smartphones β decided to disregard that limit away and sells a laptop with battery so big, itβs legally banned from flights.
The Laptop In Question? Energizer EnergyBook Pro Ultra

Technically, Energizer didnβt build this laptop, French-based Avenir Telecom does (as a licensee). The premise of Energizer EnergyBook Pro Ultra laptop is straightforward: massive batteries. Itβs got a 4-cell 192Wh (13,000mAh at 14.8V) lithium-polymer battery that exceeds all aviation limits, but in return you get a claimed week-long standby, up to 28 hours of βintensive office use,β or around 11 hours of gaming and graphic design.
Massive battery laptop aside, itβs more or less a regular work laptop β AMD Ryzen 5 processor βoptimized for maximum energy efficiencyβ, along with 16GB DDR4 RAM, 512GB NVMe storage, and a 18-inch FHD+ display. No discrete graphics, of course, since they consume more power and is detrimental to the battery life. All that can be had for the starting price 449 Euros (~RM2,215), which is quite a solid price tag all things considered.
Still, that kind of defeats the purpose of laptops, which are meant for users to carry around places beyond a desktop PC could; and if you ever want one, chances are itβs not sold beyond European borders (even though no further information on availability has been announced at this time).
Pokdepinion: A bit oxymoronic, if you ask me.
