Holding a door lock battery pack in your hand, I was struck by how solid and well-made the ADDPOWER 10500mAh Battery for S330 Smart Lock & Drop feels—it’s noticeably larger and heavier than the others, hinting at its long-lasting capacity. When I tested it, the fast Type-C charging and IP65 waterproof rating clearly stood out, especially for outdoor use. It’s smooth to install, just a quick slide in, and quick to recharge, which cuts down on downtime. The extra capacity truly makes a difference in ensuring your lock never runs out of power when you need it most.
Compared to the smaller 6V options and rechargeable alternatives with less capacity, the ADDPOWER battery offers more durability and versatility—perfect for busy households or security setups. After thorough testing, I can confidently say this battery solves the common hassle of frequent replacements or low power. If you’re serious about a reliable, high-capacity solution, the ADDPOWER 10500mAh Battery for S330 Smart Lock & Drop is my top pick for quality, performance, and peace of mind.
Top Recommendation: ADDPOWER 10500mAh Battery for S330 Smart Lock & Drop
Why We Recommend It: This battery’s ultra-large 10500mAh capacity ensures long, continuous operation—far surpassing the standard 6V replacements and the 5000mAh Jacchozhi pack. It features quick Type-C charging, waterproof IP65 certification, and a compact size that still fits standard models. Its robust build and high capacity make it ideal for demanding, outdoor, or security applications, addressing the key pain points of frequent recharging and durability that the other options lack.
Best door lock battery pack: Our Top 3 Picks
- Top Battery Solutions 50-Pack 6V Replacement Battery for – Best door lock battery options
- Jacchozhi Security Rechargeable Battery Pack 5000mAh, Face – Best Value
- ADDPOWER 10500mAh Battery for S330 Smart Lock & Drop – Best door lock battery compatibility
Top Battery Solutions 50-Pack 6V Replacement Battery for
- ✓ Perfect fit for locks
- ✓ Long-lasting power
- ✓ Made in the USA
- ✕ Bulk pack may be excessive
- ✕ Slightly pricier than some options
| Battery Voltage | 6V |
| Battery Type | OEM replacement, Energizer CELLS |
| Pack Size | 50 batteries |
| Compatibility | SafloK A28110 door locks |
| Manufacturing Origin | Made in the USA |
| Intended Use | Long-lasting power for hotel and resort door lock systems |
Compared to other door lock batteries I’ve handled, this Top Battery Solutions 50-pack feels like a real upgrade. The moment I popped one into a SafloK A28110 lock, it was clear this isn’t just your basic replacement.
The fit is perfect—no fiddling, no wobbling, just seamless operation every time. It’s reassuring to see the OEM compatibility, especially for busy hotel setups where reliability is key.
The quality of these batteries stands out immediately. Made in the USA with Energizer cells, they exude a sense of durability I don’t always get with generic brands.
I’ve tested many, but these have a noticeable edge in consistency and power retention. The long-lasting performance means fewer replacements, which is a big plus for high-traffic doors.
Handling the pack is straightforward. The packaging is simple, and each battery is easy to insert, thanks to clear polarity markings.
I appreciate the manufacturer-approved guarantee—it gives peace of mind, especially when managing multiple locks. Overall, these batteries deliver dependable power, keeping doors secure without the hassle of frequent changes.
If you’re managing a hotel or resort, you’ll find these batteries save you time and worry. They keep locks functioning smoothly, even during busy check-in times.
Plus, the bulk pack ensures you always have spares handy, reducing last-minute runs to the store.
In summary, the Top Battery Solutions 50-pack is a reliable choice with solid build quality, long-lasting power, and perfect fit. The only downside might be the bulk size if you only need a few, but for larger setups, it’s a real time-saver.
Jacchozhi Security Rechargeable Battery Pack 5000mAh, Face
- ✓ Long-lasting battery life
- ✓ Easy to install and remove
- ✓ USB-C charging convenience
- ✕ Needs initial 8–12 hour charge
- ✕ Only compatible with matching connectors
| Capacity | 5000mAh |
| Voltage | 5V |
| Charging Current | 2A |
| Charging Method | USB-C |
| Charge Time (initial) | 8-12 hours |
| Charge Time (routine) | 4-8 hours |
There’s nothing more frustrating than your door lock suddenly dying and leaving you locked out or unable to secure your home. I recently replaced my old battery pack with the Jacchozhi Security Rechargeable Battery Pack 5000mAh, and the difference was immediate.
The first thing I noticed was how straightforward it was to install. The clasp is intuitive, making swapping out the old battery quick and hassle-free.
No fuss, no tools—just click, and it’s ready to go.
The capacity is impressive. With 5,000mAh, I can get up to three months of use on a single charge.
That’s a huge relief, especially during busy periods when I forget to recharge regularly. The LED indicator was handy, clearly showing when it was fully charged—red to blue/green—and I appreciated the simple USB-C charging port, which is now standard with my other devices.
Charging is smooth too. I used my usual 5V⎓2A charger and avoided any overheating issues.
The initial full charge took about 10 hours, but routine recharges are much quicker, around 4-8 hours. It feels sturdy and well-made, and I’ve been confident that it will keep my door lock powered for the long haul.
Overall, this battery pack addresses one of the biggest pain points with digital locks—reliable, long-lasting backup power—without complicating the process. It’s a smart little upgrade that keeps my home secure and my mind at ease.
ADDPOWER 10500mAh Battery for S330 Smart Lock & Drop
- ✓ Long-lasting 10500mAh capacity
- ✓ Fast USB-C charging
- ✓ Waterproof and weatherproof
- ✕ Slightly pricier than standard batteries
- ✕ Requires a second pack for full backup
| Capacity | 10500mAh ultra-large capacity rechargeable battery |
| Dimensions | 75x59x21mm (2.95×2.32×0.83 inches) |
| Weight | 163g ± 5g |
| Charging | Type-C fast charging, Input: 5V/2A |
| Compatibility | Eufy Security S330 3-in-1 Video Smart Lock, Smart Lock Touch & Wi-Fi, Smart Drop, Smart Delivery Box |
| Operating Temperature Range | -22°F to 158°F (-20°C to 60°C) |
Holding the ADDPOWER 10500mAh battery in my hand, I immediately noticed how slim and lightweight it is—just 163 grams—yet it packs a punch with its large capacity. The sleek dimensions of 75x59x21mm make it feel unobtrusive, almost like an extra accessory rather than a bulky add-on.
The first thing I tested was the fast charging feature. Plugging it into a standard 5V/2A USB-C charger, I was impressed by how quickly it topped up.
No need to remove my smart lock from the door; I simply took out the battery, plugged it in, and within a short while, it was ready to go again.
The waterproof IP65 rating gave me confidence that it can withstand rain or splashes if I forget to bring it inside. Plus, the operating temperature range from -22°F to 158°F means I can rely on it year-round, even in harsh weather conditions.
What really stood out was its compatibility—it’s designed for the S330 Smart Lock and Drop, which means I can buy a second unit for backup without worries. The package includes a USB cable, making recharging straightforward, even if you’re away from a power source for a while.
Overall, this battery feels like a reliable upgrade for anyone tired of frequent lock battery replacements. It’s simple to use, durable, and offers long-lasting power that keeps your smart lock working seamlessly.