If you're going to get a stick battery (like the ego), do yourself a favor and at least get variable voltage, as Rod suggested. Of these, the Spinner gets the highest rating consistently on this Forum, due to its longer battery life and the fact that you can read the voltage. Here's a brief run down on ego style stick batts:
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 the eVod's toppers with two Spinners to start. This way you get a very nice setup and backup and allowing you to experience a very nice vape, as you figure out your preferences and what works best for you. 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. Anyway, my

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