Question Teric versus Perdix 2 for Recreational Diver

[tech3324]

I'm pondering the same decision on Teric vs Perdix. I know I'd prefer the Teric for warm water trips, but I wonder how well the Teric works when wearing a drysuit. Is the Teric strap long enough and elastic enough to be secure on a drysuit sleeve?

Is a backup leash of some sort recommended with a Teric?

 

[inquis]

The Teric extension works great for a drysuit.

The silicon strap is VERY strong, but if you're worried, it's a simple matter to guard against a broken pin. I elected not to bother with my second unit.

 

[Rob9876]

Thanks for all of the feedback so far. One follow-up question about the compass function of each model (compass is a huge issue for me): there was mention that the Teric compass needed to be calibrated daily or even before each dive -- does the Perdix compass need calibration that often too?

 

[mattfish]

You should calibrate all digital compasses once a day regardless of model or brand. I will generally calibrate first thing in the morning before I get near a boat (because of all the metal).

I don’t think many people do this, but you should also enter the magnetic declination of your destination before you start diving too. I use this website to look up the declination and then enter it into the Teric’s settings.

 

[lexvil]

Thanks for all of the feedback so far. One follow-up question about the compass function of each model (compass is a huge issue for me): there was mention that the Teric compass needed to be calibrated daily or even before each dive -- does the Perdix compass need calibration that often too?

The compass doesn’t necessarily need to be calibrated that often, I rarely do mine, the plus is it’s super easy. By using the QI charging from the battery pack mine doesn’t go out of calibration very often.

 

[Joneill]

Teric gives a nice vibrate alert if you find that useful. My aging eyes see the Teric better. The floating North indicator is great for situational awareness.

Perdix 2 has vibration alerts as well and a much bigger display that is as readable as the Teric - I have both. Overall, I prefer the Perdix 2, but the floating North compass indicator on the Teric is a great feature as well. They are both great computers - the biggest difference is the form factor.

 

[brsnow]

owned both, have a perdix 2, with enhanced glass I could not see a difference in screen clarity. Bug change from older perdix. Has vibration alarm and no battery issues, I do prefer 4 button use, but the would be the only area I think Teric is better

 

[drrich2]

Should I someday need a new dive computer, I may be looking at the same 2 you are. If I were buying now, I'd take close look at the rechargeable vs. non-rechargeable issue, because the pro.s and con.s may matter.

1.) I've never had a flood from swapping batteries in my old Oceanic Worldwide VT3, but find the process nerve-wracking, and I never know if I did it right till I dive with it. Every time I open and reseal the battery case, I risk compromising the seal and causing a flood. With a rechargeable battery computer, like my old Atomic Aquatics Cobalt 2, that is not a problem.

2.) But rechargeable batteries can lose capacity over time; there's a decent change you'll eventually need to have that thing replaced, which may involve sending it in and paying a chunk of money. Plus, from what I've seen, rechargeable batteries don't last nearly as many dives as non-rechargeable (and if you've got the lithium battery non-rechargeable option, I assume that really gives long life). So while recharging is easier than a battery swap, it happens far more often.

How many dives does one tend to get out of a battery in a Perdix 2 A.I.? Is swapping the battery a hassle (for the technically disinclined)? If it's not done right and the battery compartment floods, how serious is that?

 

[Marie13]

I can change the batteries in my two Perdix AI without issue. If I can do it, anyone can.

 

[Joneill]

Should I someday need a new dive computer, I may be looking at the same 2 you are. If I were buying now, I'd take close look at the rechargeable vs. non-rechargeable issue, because the pro.s and con.s may matter.

1.) I've never had a flood from swapping batteries in my old Oceanic Worldwide VT3, but find the process nerve-wracking, and I never know if I did it right till I dive with it. Every time I open and reseal the battery case, I risk compromising the seal and causing a flood. With a rechargeable battery computer, like my old Atomic Aquatics Cobalt 2, that is not a problem.

2.) But rechargeable batteries can lose capacity over time; there's a decent change you'll eventually need to have that thing replaced, which may involve sending it in and paying a chunk of money. Plus, from what I've seen, rechargeable batteries don't last nearly as many dives as non-rechargeable (and if you've got the lithium battery non-rechargeable option, I assume that really gives long life). So while recharging is easier than a battery swap, it happens far more often.

Perdix 2 battery change is super easy and battery cover has double o-rings - have never had an issue with leakage (had Perdix AI for a few years before that).

How many dives does one tend to get out of a battery in a Perdix 2 A.I.? Is swapping the battery a hassle (for the technically disinclined)? If it's not done right and the battery compartment floods, how serious is that?

You get less dives from the Perdix 2 than the Perdix AI due to the vibration function and not being able to use a Saft battery (vibration alerts require use of Energizer Ultimate Lithium). I did 33 hour + dives on my Raja Ampat trip plus Bluetooth downloads of all dives - on the last few dives, the “fuel gauge” turned yellow, but I did not get a low battery warning - so I’d guess you could get at least 40-45 sixty minute dives which is in line with Shearwater’s spec (I also have brightness on HIGH for daytime dives and LOW for night dives).