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Lithium vs Alkaline Battery Weight

It’s common knowledge that Lithium batteries outlast Alkaline batteries by about 50%. However, did you know one AAA Lithium battery weighs 33.3% less than the same brand of AAA Alkaline battery?

What is the weight difference between the lithium and alkaline battery?

In the picture below, on the left weighing in at 8 grams is the AAA Lithium battery and on the right weighing in at 12 grams is the AAA Alkaline battery. Decide which is better to use in your hiking gear and enjoy!

battery weight

Tip by JJ Mathis

7 Responses to Lithium vs Alkaline Battery Weight

  1. Tom Brucia April 8, 2011 at 11:56 am #

    Not mentioned is the fact that lithium batteries are marketed as 4X (Advanced) and 8X (Ultimate).

  2. Mike April 10, 2011 at 11:40 pm #

    The 8x Energizer lithium batteries are the best. lighter, longer lasting, the only down fall is the price. We will go through 60+ batteries on our up coming PCT thruhike. We use these to power both headlamps and our Spot. The cheapest place I found to buy them is off eBay from China for about $1 a battery which is a lot cheaper then $12 for a 4 pack in the stores.

    • j.zap February 11, 2016 at 8:50 pm #

      Be careful when buying batteries on Ebay from China….I have heard quite a few times, they are 2nds, or not originals…

  3. Lisa July 18, 2011 at 10:45 am #

    I’m surprised no one has mentioned NiMH RECHARGEABLES. Although not the *very* lightest option, they are the most economical and, even more importantly, are the only true environmental solution here. (Each and every non-rechargeable, discarded battery has to be handled by municipalities as toxic waste!)

    To make batteries last longer on your trip, keep them warm. Sleep with batteried stuff in your sleeping bag or in a pocket on your body.

    For thru-hikers, a small battery charger can be placed in a bounce box.


  4. Riv August 15, 2013 at 12:44 pm #

    Lisa is very incorrect, you should store batteries cold (32 F) to get the most shelf life. But use warm batteries (70 – 100 F) get the best output.

  5. Fast Eddie August 16, 2013 at 12:13 pm #

    Please expound upon the 8X vs 4X lithium battery.

  6. BB DD February 8, 2015 at 6:10 am #

    Lisa is correct. She is referring to battery life * during * your hike. Shelf life is irrelevant over the small period of a single trip. By making sure your batteries are warm before you start using them, you will maximize their life.

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