I tested two solar smart locks that never need to be recharged — and there is one clear winner

The best smart locks have long been a useful tool, but one of the biggest issues hampering their adoption has been battery life. Unlike most other smart home devices, smart locks have to operate without being plugged in, which means you have to change or recharge their batteries on a regular basis.

Now it seems that issue is being solved. I recently tested two smart locks that have solar panels built right into them. That means you never have to worry about your lock running out of juice and having to find an external power bank or the physical keys in order to do something as simple as get inside your own home.

The Desloc V150 Plus and Lockin Veno Solar offer some similar features, but actually vary more than you might expect. Here's a look at both of them, and what makes one better than the other.

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Desloc V150 Plus vs. Lockin Veno Solar: Price and availability

The first major difference between these two locks is their price, and it's a pretty dramatic difference. While the Desloc V150 Plus has a Kickstarter price starting at $169. Its retail price is as high as $399.99. It will be available through retail channels starting in August, so if you want one it may be worth seeing if it's still available at a discount through Kickstarter.

The Lockin Veno Solar, by contrast, is available now, and it's dramatically cheaper when it comes to the retail price. There are actually two models available: one which has a face scanner and the other a palm vein scanner. I tested the face scanner, which put it on a more level playing field with the Desloc V150 Plus. Both models, however, cost $199 or around half the retail price of the Desloc. There's also a bundle with a door handle for $259.99.

Winner: Lockin Veno Solar

Specs

Desloc V150 Plus vs. Lockin Veno Solar: Design and setup

While the two locks don't look exactly the same, I wouldn't necessarily say that one of them looks much better than the other. Both of them definitely look like smart home gadgets, which isn't necessarily a bad thing, but is worth noting for those who might want something more that leans more towards luxury.

The exterior portion of both of these blocks is a relatively bulky black rectangle made of metal and plastic. The Desloc V150 Plus has a large rectangular solar panel which sits in between the face scanner and a fingerprint scanner. It does not have a PIN pad.

By contrast, the Lockin Veno Solar does have a PIN pad, but there is no fingerprint scanner. Both locks have an interior portion that houses the battery and has a thumb latch for manual locking and unlocking.

The build quality is pretty similar, but the Desloc does feel slightly more durable. It has an IP65 rating for weather resistance, which is better than the IP53 rating offered by the Lockin Veno Solar. I suspect both of them will be able to withstand most weather events, but if you're worried about damage, then the Desloc is probably the more durable option. They both have BHMA Grade 3 deadbolt certification.

Installation of the two locks is pretty similar. Both of them require that you completely remove your existing deadbolt and locking mechanism. Once that's done, you'll install the included deadbolt, then thread the exterior portion of the lock through the deadbolt and attach it to a base plate. Finally, you'll screw the interior portion of the lock into the base plate. Then you'll download the lock's respective apps, create an account, and add the lock to your account.

Winner: Desloc V150 Plus

Desloc V150 Plus vs. Lockin Veno Solar: App and smart home

Software support is another area in which the two locks diverge. The V150 Plus runs on Desloc's existing app and connects to Wi-Fi and Bluetooth without needing a hub. I found the app decently easy to use. Adding fingerprints and faces was straightforward, I could remotely lock and unlock the door, and I got real-time access logs and battery information, including a chart showing how much battery the device has gained through solar power. Hopefully, of course, you won't need to worry much about battery at all.

The Lockin Smart app, similarly, covers the basics well. You can generate one-time PINs, enroll new faces and codes, configure auto-lock, and so on. I would have liked an overview of how much battery the lock gains over time, the way Desloc offers, but its absence isn't a big deal. With the Desloc, I found that I checked the battery gain once or twice over the first few days, then mostly forgot about it.

The big area where the Lockin Veno Solar pulls ahead is in smart home support. The Desloc V150 Plus supports Google Home and Amazon Alexa, but Lockin goes much further with Matter support. That essentially means that you can add the Veno Solar to any modern smart home ecosystem, including Google Home, Amazon Alexa, Apple Home, and more.

Sure, for those who use Google Home or Alexa, that difference may not be a very big deal. But what if you want to change ecosystems down the line? Or what if your partner uses an iPhone while you use an Android device? Matter support solves all of these issues, and it's kind of becoming table stakes for smart home devices, at least when the Matter spec supports them like it does locks.

Winner: Lockin Veno Solar

Desloc V150 Plus vs. Lockin Veno Solar: Performance

When it comes to speed and reliability of unlocking, neither of these smart locks is incredibly impressive. However, each has one feature that the other doesn't. The Desloc V150 Plus doesn't have a PIN pad, which is kind of a major omission, and means that you can't easily assign guest codes. What it does have is a fingerprint sensor, and that can come in handy given the fact that the face scanner is pretty slow. Much of the time I found that it was faster to scan my fingerprint to unlock the door than wait the few seconds for the lock to scan my face.

The Lockin Veno Solar doesn't have a fingerprint scanner but does have a PIN pad. It was actually faster to just wait for the lock to scan my face, even though it did take a few seconds. I'm not sure either of these two locks was faster at face scanning than the other. That's not a good thing; they were both slow. If you're deciding between these two locks, you'll have to determine whether you prefer to have a PIN pad or a fingerprint scanner.

It's also worth quickly noting that the Lockin Veno Solar had much more reliable Wi-Fi connectivity. Both of these locks were installed on a garden shed in my backyard, which can sometimes have spotty reception. The Desloc V150 Plus struggled a fair bit to retain a Wi-Fi connection, but the Lockin Veno Solar had no such issue. That will really only be an issue for you if you plan on putting your smart lock in an area where Wi-Fi reception isn't all that good. For most people who install the lock on their front door, both locks will retain connectivity perfectly fine.

Winner: Lockin Veno Solar

Desloc V150 Plus vs. Lockin Veno Solar: Battery life and recharging

Given the fact that these are both solar-powered locks, perhaps one of the more important questions is whether or not you'll need to worry about battery and charging. Thankfully, they both charged perfectly fine, and while they don't charge very quickly, that doesn't really matter. Basically, you'll never have to worry about whether or not your lock is charged up.

Again, don't expect them to fully charge overnight. When I first installed the Desloc V150 Plus, it had around 12% battery. A week later, it had 34%. When I installed the Lockin Veno Solar, it arrived with around 83%, and a week later, it had 90%. The actual charging speed, of course, doesn't really matter all that much. What matters is that they're not losing power over time. And if you fully charge your lock when you first get it, I expect both of these locks will remain around 100% at all times.

Winner: Tie

Desloc V150 Plus vs. Lockin Veno Solar: Verdict

For now, if you're looking for a smart lock with a solar charger, it's probably worth buying the Lockin Veno Solar. It may not have a fingerprint reader, but it does have a pin pad, plus it's around half the price of the Desloc V150 Plus.

That said, if a fingerprint reader really is important to you and you find a solar panel important, then you'll still like what's offered by the Desloc V150 Plus. You'll just have to stomach the additional cost or try to snag one from the Kickstarter campaign.

The alternative, of course, is to wait a little for solar panels to become more common on smart locks. The first few smart locks with solar panels feel a bit more like proofs-of-concept rather than the complete package.

I would have liked to see a lock with both a fingerprint scanner and a pin pad. That's not to mention support for Matter and even tech like Apple's Home Key and Ultra Wideband. I expect eventually we'll get these features in solar-powered locks, but for now, we'll have to wait.

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