I think the li-ion in the M9 provides for a more compact packaging, pouch format vs 2xAA, but otherwise is not a plus in my Jeep's climate.
For Northern EU not an issue as much, but everywhere else ...
Putting any GPS receiver/GSM transmitter in a metal cage (like an engine compartment) is not best for many reasons, including heat. Putting a li-ion there is plain dumb.
The due diligence must go on
$19.95 a month vs $49 a year?
Will Optimus use a phone call to alert you, or an app alarm? That for me was a decision maker, since once I added the number to my “important” list, it will bypass any snoozing state my phone might be in.
How long have they been in the business? The moment the company decides to close doors, all the tracking goes away.
Monimoto is the only one I've seen so far that actually places a phone call to you (and then follows it with notifications). As I perused Amazon for Optimus, I saw a few other "manufacturers" there that offer the same exact device as Optimus, including the unique magnetic case, but under their brand name. So, China is making it for a number of brands. No surprise there and I see that a lot on Amazon with other products. Optimus does offer more options for their twenty bucks a month than does Monimoto but I think that is to be expected for the price of the service. The question becomes what options am I exactly looking for and how many other bells and whistles do I have to also purchase in order to get exactly what I am looking for? Optimus also lets you option to report location as frequently as 10 seconds (for no increase in fee) without being in "theft mode" whereas Monimoto reports only in Alarm mode (during unauthorized movement only, meaning fob not present) every 5 minutes and only when the car is moving or you can speed it up in Alarm mode to "every 1-2 minutes" for successive 10-minute periods of time.
So that you know I am masterful in the art of overthinking things, here is my fearful theft scenario:
I live in an urban environment. Actually, in a city neighborhood with houses everywhere but downtown is all tall buildings with scattered entrances to underground parking. Maybe not in my city, but I saw a video, I think it was New York, where car thieves quickly drove the stolen car underground for disassembly. I have learned that these GPS trackers often do not report location when even a single floor underground. A GPS thing. In our many Seattle neighborhoods, many if not most homes have their garages below street level, as part of the basement. Underground, if you will.
So, let's say I am parked in front of my house or am downtown parked on the street and my vehicle gets stolen, whether my Jeep or my Camaro. So, I turn on my tracker and see the map showing my car moving along neighborhood or downtown streets. But, say I have a tracker that reports every 5 minutes in Alarm mode. All of a sudden, it can't locate my car anymore. The map shows my car "stopped". Has it indeed stopped right there where the map shows, or have the thieves taken it underground? I mean, setting aside that they found the tracker and threw it to the side of the road, where else could they go with my car? So, judging from the last reported location, in five minutes hence the thieves could have turned into any of a number of underground parking garages in the city environment or may have ducked into a neighborhood basement garage. Five minutes is a wide radius on a map from my last known location, if you see what I mean. However, if I had a tracker that reported, say, every 10 seconds, then it would seem to me that the thieves could not get very far in 10 seconds from the last reported location (a smaller search radius) which means I (or the police?) might have fewer underground garages to consider?
I fear finding out during a theft how much of a hindrance 5-minute delays in reporting might be.
Currently I subscribe to LandAirSea's Overdrive unit where I can select from six different reporting intervals, from 3 minutes to 3 seconds, and of course their subscription fee increases accordingly the shorter the interval. Currently I am paid up with them for 10-second reporting and that comes to 20 bucks a month for paying ahead for 2 years. LandAirSea devices are made in USA (with domestic and imported parts) and the employees are US-based. The Overdrive model has a long battery life as compared to their inexpensive Model 54. It tracks all movement of my vehicle, every trip I make in it. No fob involved. It has a strong magnet for attaching it even to the underside of the vehicle, they said. Tech help was fast when I emailed with questions early on. I will note that the Overdrive unit does not report my Jeep's location when I park one floor underground at my grocery store. It will only always show the last report which is at the underground garage's entry point.
While I am locked into that product for 2 years, I can research other ideas, as I have two vehicles to think about. I am getting my Camaro cosmetically restored as we speak.
I do see the attraction in Monimoto 7. I just want to take my time to investigate my options. Monimoto is based out of Lithuania, FWIW.