3 tablet charging mistakes to avoid in 2026 - and how solid-state batteries change the rules

Tablets occupy a unique position in the battery charging landscape: their large batteries require significant energy to charge, their use patterns often involve prolonged periods on chargers, and their role as semi-permanent home devices means charging habits are deeply ingrained and often suboptimal. In 2026, with solid-state battery technology advancing rapidly in the automotive sector and sodium-ion entering mass production for consumer electronics, the charging best practices for tablets are evolving, and three common mistakes deserve particular attention. Mistake one: using the wrong charger. Many tablet owners continue using the low-power charger that came with their phone, not realizing that tablets typically require 20 to 45 watts for optimal charging speed. Using an underpowered charger does not damage the battery, but it dramatically extends charging time, which leads to mistake two: charging overnight out of necessity because daytime charging is too slow. With GaN chargers now compact and affordable, there is no reason not to have a dedicated high-power tablet charger at every charging location. USB-C Power Delivery at up to 240 watts in the latest PD 3.2 specification provides ample headroom for even the largest tablets. Mistake two: constant trickle charging. Tablets that remain plugged in at 100 percent for days or weeks experience elevated stress at high state of charge, which accelerates capacity degradation in lithium-ion cells. iOS 26 and the latest Android versions include intelligent charging management that holds the battery at 80 percent until just before predicted use, but this only works if the system has enough usage data to make accurate predictions. For tablets with irregular use patterns, manually enabling a charge limit setting, typically 80 percent, is a better strategy for long-term battery health. Mistake three: charging in thermally challenging conditions. Tablets used for gaming or video editing generate significant internal heat, and charging on top of that heat pushes battery temperatures into the degradation zone. The solution is to charge during rest periods rather than during intensive use, or to use Qi2 wireless chargers with active cooling that can maintain safe battery temperatures even during simultaneous charging and use. The solid-state batteries demonstrated by CATL at 350Wh/kg and Gotion at 400Wh/kg will eventually eliminate many of these concerns, as solid-state chemistry tolerates full charge and high temperatures much better than liquid-electrolyte lithium-ion, but these are not expected in tablets until 2032-2035. Sodium-ion batteries, however, are arriving in consumer electronics now, and their inherent safety and cold-weather performance make them an attractive alternative for future tablet designs.