SteriPEN adventurer Opti question…

Hi Denis,

Yes, the little plastic bit keeps the circuit "open" and would prevent any potential drain during storage. Probably a prudent step, in case the issue hasn't been completely corrected by SteriPEN. (I've always done this with flashlights that have switches that can inadvertently switch on in a pack.)

Cheers,

Rick

"What's your experience?"

I have the old Adventurer — the one with metal sensors. I NEVER bother removing the batteries in between uses. No noticeable leaks — even after 3-4 months of storage.

And in my 7-month RTW trip in 2009 when I used my Steripen regularly, 3 sets of CR123's were all that was needed (actually 2.5 sets since the last set still had juice left upon my return).

EDIT: I am really beginning to think that the "auto discharge" problem lies in the rechargeable batteries themselves — and not in the Steripen circuitry. My batteries were Energizer Lithium batteries — non-rechargeable — and again, I just haven't found "auto discharge" a problem at all with my Energizer batts.

To quote Roger's Opti review:

"First of all, many of the older Adventurer units had a rather high 'off-state' current drain, of about 600 micro-amps. This meant that storing the unit with the batteries in place for a few weeks could make a bit of a dent in the battery capacity. It was not unknown for people to go to use their Adventurer during a trip only to find that the batteries were flat. It turns out (according to Hydro-Photon, the makers), that the 'off-state' current drain was never meant to be anywhere near that high: it should have been only a tenth of that."

The rub is that "many" which implies "some, but not all." For a specific unit, it's not hard to test for anybody who owns a multimeter and wants definitive data.

Cheers,

Rick

Rick:

In that case, if I were a recent buyer, I would go to the nearest Radio Shack (or equivalent) and do a quick test. I strongly suspect that Hydro Photon has fixed the "unexpected" problem — but if there is a high leak, I would sooner return/exchange the unit — then deal with reversing/swapping out batteries for as long as I own the darn thing…

Hi Ben,

Agreed, far better to know than to fret.

Cheers,

Rick

Roger Caffin did some testing with the newer model and reported better battery life.

I use a simple strip of paper under the battery compartment cover to prevent discharging. I like the idea of a plastic disk– you could cut one from a recycled container or use a plastic washer.

Basically, any device using batteries should be stored for long terms should have the batteries removed. I've seen a lot equipment damaged due to battery leakage.

> any device using batteries should be stored for long terms should have the batteries removed.

My thoughts exactly.

Cheers

Ditto 2 — although I was referring to cases where battery drainage seems excessive and quick — as in a week or two. Definitely not the norm — not for non-chargeable lithiums.

I was puzzled that my infrequently used steripen indicator light turned red when immersed in water.
I emailed SteriPen "I replaced the batteries and remedied the problem, yet the old batteries were only used for maybe 50 treatments and register "good" on a battery checker. Is something wrong with my pen?"

Reply from SterPen: "You can expect up to 50 1L treatments of purified water per set of batteries. Although the batteries may have enough electrical pressure (voltage), the capacity of the battery is depleted. The battery tester may only be testing if there is sufficient voltage without resistive a load, and is giving a false positive."

So, as I read things : (1)if your pen's light turn red when you put it in water, change batteries, (2) take the batteries out of your pen when you aren't on the trail, and (3) don't rely on a voltmeter to decide whether to reuse your batteries.

It is unfortunate that the people who make these gadgets can't include plain-English instructions with them.

I love my Steripen Journey but when I asked a question I got a response that may as well have come off the box, rather than a precise, true answer to my exact question. And it came several MONTHS later!

I think the customer service folks don't have real-world experience with their products – hence the inadequate responses. Too bad, since it's a great product.

Reply from SterPen: “You can expect up to 50 1L treatments of purified water per set of batteries. Although the batteries may have enough electrical pressure (voltage), the capacity of the battery is depleted. The battery tester may only be testing if there is sufficient voltage without resistive a load, and is giving a false positive.”

Can anyone recommend a battery tester that applies a load to check capacity and accepts CR123 batteries?

I had an Adventurer Opti a couple years ago

I used new batteries, treated a couple liters, stored for a month, used again and it only treated a couple more liters before dying.

So, it may be good to remove batteries, although they could have modified the unit since I tried mine.  Or put paper or plastic in would be just as good.

Also, carry a spare set of new batteries

I just returned mine, but a lot of people are happy with it.  I switched to Squeeze which seems more reliable, although it’s not perfect either.

REMOVE BATTERIES after the trip.
This applies to any device which has a ‘soft’ switch rather than a mechanical switch. That includes most headlight etc.

Cheers

@feetfirst

I’ve got a ZTS MB-1 after going through several cheap $5-10 testers.  I’ve never looked back.  Works great, and reliable.  Recommended in the candlepower forum.

Thank you, Jim. Very helpful.

Since many people are backpacking with battery packs to recharge their phones, GPS, headlamps, etc., I’d like to see a Steripen with no battery at all, and instead just a micro USB input. Take the cable and battery pack you would already have with you, and you’re set. Disconnect the cable when you’re done, and there’s no risk of draining the battery.

Plus, the Steripen should be smaller, lighter, and less expensive. (Higher on my wish list, though, is an LED Steripen.)

Jim,

I have the Steripen Ultra which is rechargeable.  I really haven’t had it out enough to give it a thorough review but it has worked well for me the few times I’ve taken it backpacking and when I traveled through India.

Last I knew (a couple or three years ago) They had trouble producing the UV-C wavelengths in LEDs. It could be a while before we see this. I am guessing here, but the plastic is pretty opaque to UV-C. There would also be no indicator (blue light) from the light, it could be quite damaging to the eyes.

Ian: I had a Steripen Ultra. Unfortunately, it gave out on me on my first trip with it, on day four of six. The battery was fine, but it indicated the bulb was kaput. I returned it, and I’m sure my experience was not typical for a Steripen user. And I will say, it was convenient while it lasted.

My idea for a Steripen with no internal batter that runs off a USB battery pack may be a crazy idea, with a potential market of one (me). But, considering there’s some inefficiency using a battery to charge another battery, rather than power the device directly, it’s not <i>completely</i> crazy (just mostly). I’m not going to hold my breath for this one.

James: At least one company has begun mass production of UV-C LEDs. Maybe we’ll see this in the near future. I <i>will</i> hold my breath for this.

Jim, that was news to me. Thanks for the link. Like any new technology, the initial expense will be high along with longevity problems. They say it will have the majority market share by 2018 but I am betting they will only have the kinks worked out. Typically, they will be slow to produce these, but the power requirements will be a LOT less than a bulb. I will guess that Steripen is all over this in an effort to produce some sort of viable travel/camping lamp.

a Steripen with no battery at all, and instead just a micro USB input.

Right now, that cannot happen unless you have an on=board rechargable battery. Not ‘won’t’, cannot. The microUSB current limit is 0.5 A at 5 V; a Steripen with a discharge tube pulls 1 A at >6 V. (That does not include the new USB-C design. It does have higher power.)

However, the world of UV-C LEDs is growing. You can get UV-C LEDs right now, but not with enough (optical) power output. But the power level rises each year. It will happen – when the technology exists.

Cheers