What is mean by a 100Ah battery? [For Beginner]

100Ah is mean that battery is guaranteed to provide a continuous current of 10A over the discharge period of 10 hours (10A x 10h =100Ah) if the battery is of Class C10 and if it is of Class C20 it will provide a continuous current of 5A over the discharge period of 20 hours (5A x 20h =100Ah).
100Ah is mean that battery is guaranteed to provide a continuous current of 10A over the discharge period of 10 hours (10A x 10h =100Ah) if the battery is of Class C10 and if it is of Class C20 it will provide a continuous current of 5A over the discharge period of 20 hours (5A x 20h =100Ah).

Starter 12V 100Ah 720 battery has 310x175x215mm (+) D - Vlad

【Contents】 13.9* 6.9* 7.5inch 100ah lithium battery, with 2*5.0V 2.1A USB port on the side of the battery shell, a three-pin jack for charging and LED

VPauexii LiFeP04 Battery,12V 100Ah Lithium Deep Cycle Battery, 12v Lithium Battery 100ah with Built-in BMS, Easy Installation, 5000+ Cycles, 10-Year

Weize 12V 100Ah LiFePO4 Lithium Battery, Built-in Smart BMS, Group 31 Deep Cycle Battery Perfect for RV, Solar, Marine, Overland/Van, and Off Grid Applications : Health & Household

What is mean by a 100Ah battery? [For Beginner]

RV lithium battery upgrades for beginners

Perfect for your bass boat, trolling motor, RV, solar energy storage and more. 2-4x the service life (3,000 to 5,000 cycles on average) Weighs 70%

Ionic Lithium 12V 100Ah | LiFePO4 Deep Cycle Battery + Bluetooth

Car battery, Volta, CLASSIC BLUE, 12V, 100AH, 870A, 353x175x190mm, + right., 2 years warranty, valid for any charger, battery starter, European manufacture - AliExpress