Whether a solar smart lock is worth paying more for depends on comparable configurations and the doorway where it will be used. Compare the features, included equipment and installation needs of the actual candidates before attributing a price difference to solar charging. If useful light and a real charging burden coincide, solar assistance may offer convenience. If the door stays shaded or the household is comfortable with normal battery care, that benefit is less clear. Neither situation establishes a universal price ranking or financial payback.

What You’re Paying For Beyond the Solar Panel

When comparing a solar smart lock with a battery smart lock, look at the full feature package instead of treating the solar component as the only difference. Two locks can have very different prices because they are not actually comparable in features.

• Unlock methods: keypad, app, fingerprint, palm vein unlocking, 3D Face Recognition, mechanical key, or other access methods.
• Connectivity: built-in Wi-Fi, hub requirements, Matter compatibility, or smart home integrations.
• Power design: replaceable batteries, rechargeable batteries, solar-assisted charging, or an optional solar accessory.
• Video features: camera, doorbell functions, two-way audio, motion or human detection, and local storage.
• Installation package: whether handles, batteries, solar accessories, or other hardware are included or sold separately.
• Outdoor fit: stated IP rating, temperature range, and installation requirements for the specific door.

For Lockin specifically, Veno Solar Palm and Veno Solar Face are relevant built-in solar self-charging options. Veno Solar Palm is associated with ABX3™ Perovskite Solar Self-Charging and palm vein unlocking, while Veno Solar Face is associated with ABX3™ Perovskite Solar Self-Charging and 3D Face Recognition. The broader Veno family includes Palm Vein Recognition smart locks with different feature tiers, including models with video features and models where solar support may come through a separate accessory rather than the built-in Veno Solar design.

That distinction matters: the Lockin Veno Series Solar Panel is a separate accessory for compatible Veno Pro and Veno Plus models. It should not be confused with the built-in ABX3™ solar self-charging system on Veno Solar Palm and Veno Solar Face.

Solar-Assisted Charging Is Not the Same as No Battery

Solar-assisted smart lock charging means light helps maintain or recharge the lock’s battery. It is not an operation-without-a-battery design, and it should not be treated as a reason to ignore battery status entirely. This is especially important for renters and homeowners who travel frequently. The value of solar is convenience and reduced power-management friction, not a promise that the lock can be forgotten indefinitely. Assign responsibility for checking battery status and arranging normal charging before a long absence, rather than relying only on the solar label.

Lockin’s listed product facts for Veno Solar Palm and Veno Solar Face include both ABX3™ Perovskite Solar Self-Charging and a rechargeable battery specification: 37Wh, 7.4V, 5000mAh. Those same product facts also list USB-C emergency power. In other words, the solar system supports the battery; it does not replace the need for stored power.

• Check battery status in the app or lock interface when available.
• Understand low-battery alerts before installation.
• Keep backup access options available.
• Know where the emergency power port is located.
• Review the current product manual for recovery steps if the battery becomes critically low.

What Happens at Night, in Winter, or on Cloudy Days?

At night, a solar smart lock relies on stored battery power. Solar input is not active in the dark, so the lock must have enough charge stored to operate through normal nighttime use. If the battery becomes critically low, backup access becomes important. For Veno Solar Palm and Veno Solar Face, Lockin’s listed facts include USB-C emergency power. Buyers should still verify the current product manual for exact low-battery alerts, emergency power steps, and any mechanical access instructions for the specific model they buy.

In winter, during extended cloudy weather, under a covered porch, or on a shaded door, solar input may be lower or less consistent. Lockin’s official facts for Veno Solar Palm and Veno Solar Face state that the ABX3™ system supports daily light charging and low-light charging on cloudy or rainy days, but buyers should not turn that into a universal guarantee for every door, climate, season, or usage pattern.

• Does the lock area receive direct or indirect daylight?
• Is the door under a roof, awning, deep porch, or tree cover?
• Does the door face a direction that gets meaningful light during the day?
• Are winters long, dark, or frequently overcast where you live?
• Is the door used heavily by multiple household members?
• Will video or Wi-Fi features increase daily power demand on the model you choose?

When a Battery Smart Lock May Be the Better Buy

Consider a battery-powered model without solar assistance when the door is shaded, normal charging is manageable or solar is not a feature you want to pay for. Compare the actual complete configurations before deciding which costs less. In the Lockin range, Veno Go and the non-video Veno provide alternatives to review; verify their access methods, included equipment, current price and door fit on the exact product page. For a rental, settle permission and restoration requirements before choosing the power arrangement.

• Your door is in an interior apartment hallway or a heavily shaded entry.
• Your lease limits lock changes or exterior modifications.
• You want a simpler model without paying for features you will not use.
• You are comfortable responding to battery alerts.
• The lock will be used on a lower-traffic door.
• You prefer to keep the purchase decision focused on core access features rather than solar convenience.

How Lockin Veno Solar and Veno Options Fit the Comparison

Lockin Veno Solar Palm and Veno Solar Face are the most directly relevant Lockin examples for this solar smart lock comparison. Both are listed with ABX3™ Perovskite Solar Self-Charging, a rechargeable battery specification, built-in Wi-Fi/no hub, Matter compatibility, Auto-Lock, IP53, ANSI Grade 3, and USB-C emergency power in the available product facts. Veno Solar Palm focuses on palm vein unlocking, while Veno Solar Face focuses on 3D Face Recognition.

The no-hub wording concerns native Wi-Fi operation. Apple Home or SmartThings integration requires an operational Matter-over-Thread certified hub under the Solar manual; include that equipment if it is needed for the selected setup.

The broader Veno line helps buyers compare solar convenience against other smart lock priorities. Some Veno models focus on Palm Vein Recognition without built-in video. Others, such as Veno Plus Palm Vein Recognition Video Smart Lock and Veno Pro Palm Vein Recognition Video Smart Lock, add video-related features and may support the separate Lockin Veno Series Solar Panel accessory according to the available product facts. Before buying, verify the current official product URL, current price, included accessories, compatibility, weather exposure guidance, battery information, and backup access instructions. Product pages and bundles can change, and the right choice depends on the door where the lock will actually be installed.

A practical Lockin comparison should separate three questions:

1. Do you want built-in solar self-charging? Look at Veno Solar Palm or Veno Solar Face.
2. Do you want Palm Vein Recognition without prioritizing built-in solar? Compare options in the Veno family.
3. Do you want video features and possible solar accessory support? Review Veno Plus, Veno Pro, and compatible accessories carefully.

Buyer Checklist: Is the Solar Premium Worth It for You?

A solar smart lock may be worth the premium for convenience-focused buyers with suitable entry conditions. A battery smart lock may be more cost-effective for budget-focused buyers, shaded doors, or renters with stricter installation limits. A price difference may also reflect biometric unlocking, video functions, connectivity or included accessories, so compare matched configurations before attributing the difference to solar. However, exact pricing changes over time, so compare current product pages and make sure the models have similar features before deciding one is truly more expensive. Renters should start with permission and reversibility, not the power source. Check your lease, ask the landlord if required, confirm whether drilling or exterior changes are allowed, and make sure the original lock can be restored. If a solar model requires an exterior setup your lease does not allow, a simpler battery model may be the safer choice. Contact Lockin to learn more about these smart lock options.

• Sunlight exposure: Does the lock area receive usable light during a normal day?
• Shade and coverage: Is the entry protected by a porch, awning, screen door, trees, or building overhang?
• Seasonal conditions: Will winter, cloudy weather, or frequent rain reduce available light?
• Door usage: Will the lock be used many times a day by family, roommates, visitors, or deliveries?
• Budget: compare the complete eligible configurations, separating the cost of solar convenience from video, biometric, or other upgrades. Do not infer a payback period from convenience alone.
• Feature fit: Are you paying for unlock methods, video functions, app features, or smart home compatibility you will actually use?
• Backup access: Do you understand low-battery alerts and emergency power options such as USB-C emergency power on supported models?
• Installation: Does the lock fit your door, deadbolt setup, handle setup, and exterior exposure?
• Renter rules: Does your lease allow lock changes, and can the original hardware be restored?
• Total ownership: Are you comparing current price, accessories, charging habits, support, and installation needs—not just the sticker price?

Is a solar smart lock worth the premium?

It can be worth it if your door gets usable light and you value reduced battery-management effort. It may not be worth it if your door is shaded, your budget is the main factor, or your rental rules make installation difficult. The best decision depends on your entryway, usage level, and preferred unlock methods.

Do Lockin Veno Solar Palm and Veno Solar Face still have batteries?

Yes. The available Lockin product facts list ABX3™ Perovskite Solar Self-Charging and a rechargeable battery specification for both Veno Solar Palm and Veno Solar Face. Solar-assisted charging supports the battery; it does not remove the need for stored power or battery awareness.