2. What is the difference between a primary battery and a secondary battery?

The primary battery can only be discharged once, and the secondary battery can be repeatedly charged and discharged for recycling. The rechargeable battery has a reversible change between the electrode volume and the structure during discharge, so these changes must be adjusted during design, and the interior of the primary battery is much simpler. Because it does not need to adjust these reversible changes, the mass-to-capacity ratio and volume-to-volume capacity of the primary battery are larger than those of the general rechargeable battery, but the internal resistance is much larger than that of the secondary battery, so the load capacity is low, and the self-discharge of the primary battery is far. Less than secondary battery.

Apron Sink

The apron sink front protrudes slightly from the supporting cabinets, eliminating countertops that cause users to lean forward and over-stress. At the same time, this practical design helps prevent cabinet damage. The apron sink is easy to install following this video. Made of high quality stainless steel, this handmade sink is not only anti-corrosion and anti-scratch,but also strong and durable.Its Modern and stylish appearance fits into any style of kitchen.

Apron Sink,Copper Farmhouse Sink,Undermount Farmhouse Sink,Granite Sink

JIANGMEN MEIAO KITCHEN AND BATH CO.,LTD , https://www.jmmeiaogroup.com