SOLVED:A capacitor is charged by a 9.0-V battery. The charging current I(t) is shown. (a) What, approximately, is the total charge on the capacitor in the end? [Hint: During a short time interval Δt, the amount of charge that flows in the circuit is 1 Δt .1 (b) Using your answer to (a), find the capacitance C of the capacitor. (c) Find the total resistance R in the circuit. (d) At what time is the stored energy in the capacitor half of its maximum value? (FIGURE CAN'T COPY)

Rechargeable 2032 Batteries 12 Pack with Coin Battery Charger,3.6V Lir2032 Button Battery Charger with 8 Charging Bay

Chargie: Smarter than Apple's Optimized Battery Charging - 9to5Mac

How to Make a Phone Charger Using 9v Battery

How to safely recharge rechargeable 9 volt battery?

9-volt batteries you can recharge via USB

Rechargeable 9V Smart Batteries with USB Charger by Pale Blue, Lithium Ion 9 Volt 500 mAh, Charges Under 1 Hours, Over 1000 Cycles, 2-in-1 USB to Micro USB Charging Cable, LED Charge Indicator, 4-Pack

4Patriots USB-Rechargeable 9V Batteries: Recharge Up to 500 Cycles, Chargeable Via USB Port, 350 mAh Lithium Polymer Battery, with Charging Cable & Clamshell Case, Durable & Powerful – 2 Pack