The Classic is the workhorse of the SteriPEN family. It’s a product that you can consistently rely on for its ruggedness and performance. 

The Classic is also the SteriPEN that gives you the longest battery life. Using four AA lithium batteries, the Classic gives you the power to purify an incredible 200 half-liters of water with a single set of batteries, providing you with that extra confidence to know that you’ll have access to safe drinking water whenever you’re hiking or camping in the wild.

Like Journey, SteriPEN Classic’s tapered end provides a snug fit with water bottles, and with the SteriPEN Fits All Filter, works even with wide-mouth water bottles.

As a reminder, battery quality varies greatly by brand. We recommend using only well-known brand name Lithium or Nickel Metal Hydride batteries.  Alkaline batteries of any kind are not recommended.

Emergency Specs :
Weight:                   5.7oz. (162g) with lithium batteries
Size:                        7.6" (L) X 1.5" (W) X 1.5" (H)
Battery:                    Uses four AA Lithium Batteries (not included)
Battery Life:            200 treatments (16oz./0.5L)
UV Lamp Life:        8,000 treatments

Adventurer, Journey, Traveler Mini & Protector Models

The SteriPEN Adventurer Opti and Journey models come with 2 disposable CR123 Batteries. The Solar Charging Case and the Adventurer Opti w/ Solar Charging Case bundle-pack come with one double RCR123 battery, which replaces two single RCR123s. RCR123 batteries are rechargeable. CR123 batteries are disposable (not rechargeable). You can purchase AW high current rated batteries at 4sevens.com.

Traveler mini uses 2 disposable CR123 batteries, which are not included. SteriPEN Protector comes with 2 non-rechargeable CR 123 batteries.

Energizer 2CR5 photo lithium battery
Duracell Ultra DL123 (Photo Lithium battery)
Panasonic
Sanyo
Sony
Kodak
SureFire

Classic, Traveler, Emergency, & Defender Models

The SteriPEN Classic, Traveler, and Emergency products all use 4 AA batteries, which are also sold separately. All utilize AA Lithium or NiMH (rated 2300 or better) batteries. Well-known, brand name Lithium or Nickel Metal Hydride batteries are strongly recommended for their superior power. Alkaline and NiCad batteries are NOT recommended for use with these SteriPEN water purifying devices.

Recommended Batteries for Emergency Traveler, Classic & Defender Models:

NiMH
Energizer E2
Duracell  

AA Lithium
Energizer
Energizer Ultimate

More Battery Information

Rechargeable type battery recommendations:

 Generally speaking, the higher the voltage the better the performance. SteriPEN water purifiers have been designed to accept the highest voltage RCR123 batteries on the market. RCR123 batteries with voltages up to 4.2V (per battery) are perfectly fine to use with the SteriPEN.

AW high voltage drain batteries will generally provide 35-40 liters of water per charge. These are available at www.4sevens.com

Batterystation.com brands their own batteries. These will generally provide 25-35 liters of water per charge. Not great, but acceptable.

Rechargeable batteries we DO NOT recommend for use with the SteriPEN Journey

Based on our experience, Tenergy batteries have inconsistent performance. Generally we do not recommend using them.

Adventurer / Traveler mini / Traveler mini opti / Protector purchases:

Hydro-Photon/SteriPEN-manufactured dual cell CR123 (ONLY sold with ADO-SC). As this is a dual-cell rechargeable battery it will not fit in the battery compartment of the SteriPEN Journey. All other batteries recommendations for the Journey are the same for these four models.