There are many choices, but not all stick batteries are created the same, and it's fairly important that you stick with name brands in this category and battery regulation varies by device, and that can affect the vape in several ways. Here's my two cents on stick batteries:
Stick Batteries, known as eGo Style Batteries (entry level, backup, out and about, stealth, primary):
Trusted Vendors shown, but NOT selected based on pricing, you'll still need to shop around. You will need device specific battery chargers (which often come in kits) for these devices. Also, kits often provide two batteries allowing for simultaneous vaping while charging of the backup. Each of the eGo style batteries below have both 510 and eGo thread connections. As such, they are compatible with most toppers, including most Kanger products. Additionally, each of these devices has at least variable voltage, which allows you to adjust and regulate the battery output voltage, providing customizable vapor production, temperature, throat hit, and finding the "sweet spot" for your juices to suit your individual vaping preferences:
1. Innokin iTaste 3.0 vv/vw, usb passthrough, ohms reader, etc. -
https://ivape.net/index.php/iTaste-VV-3.0-Variable-Wattage-Device-Pearl-Chrome.html (variable power, LCD display, +/- buttons, Usb passthrough, 3.3 - 5.0 volts, 6.0 - 11.0 watts, 800mAh)
2. SLB KGO VV -
http://www.hoosierecig.com/Mega-KGO-VV-1200mAh-3-6v-_p_441.html (LCD display, +/- buttons, Usb passthrough, 3.0 - 6.0 volts, 650 - 1200mAh)
3. Vision Spinner -
Vision Spinner VV eGo Battery 1300mAh (3.3 - 4.8 volts, 1300mAh)
4. Joyetech Twist -
eGo Twist 1000 Mah Battery in Black (3.2 - 4.8 volts, 650 - 1000mAh)
5. Smoktech Winder -
Smok eGo Winder 900mAh Variable Volt Battery (3.2 - 4.8 volts, 900 - 1100mAh)
Best Starter Combo kit out there, imho, provides two batteries, i.e., the twist and/or spinner, and two toppers, i.e., the eVod and/or MT3s, among others:
http://www.myvaporstore.com/Vision_Spinner_Joye_Ego_C_Twist_Combo_p/vvs-c.htm.
Recommend one eVod and one MT3s topper with one Spinner and one Twist to start. This way you get four different products with the kit and allowing you to experience four different setups, as you figure out your preferences and what works best for you. Alternatively, the Spinners with evods has been a popular choice with many vapers this year. Or finally, two iTaste 3.0's with Protanks II's would be perhaps the best vape in this category available, imho. BTW, you can spend less and get a fixed voltage battery, but you'll have much less vape flexibility and it won't be long before you'll want to upgrade to variable voltage, more than likely, and the difference initially is only a few dollars per battery anyway.
Welcome to the Forum. Good luck in your GearQuest!