I’m picking between two top-tier CR2450 coin cell options: the Renata CR2450N 4-pack with 540mAh capacity and the Toshiba CR2450 5-pack with a higher 590mAh capacity. Both are 3V lithium batteries that fit watches, key fobs, and small electronics, but they have real differences in value and performance.
If you want premium quality and don’t want to replace batteries often, this comparison is for you. The trade-off comes down to capacity versus packaging — let me show you which one I’d grab for my own devices.
🏆 Quick Picks — My Top Recommendations
Best Overall: Renata CR2450N 4-Pack
Swiss quality with 540mAh per cell and a stellar 4.5-star rating from 714 reviews — Check Price →
Runner-Up: Toshiba CR2450 5-Pack
Higher capacity at 590mAh and child-resistant strip packaging for safety — Check Price →
I put the Renata CR2450N 4-pack and the Toshiba CR2450 5-pack side-by-side so you can see exactly how their specs stack up.
Full Specs Comparison
| Specification | Renata Batteries CR2450N | TOSHIBA CR2450 3V Lithium |
|---|---|---|
| Voltage | ✅ 3V | 3V |
| Battery Type | Lithium Coin | Lithium Coin |
| Model | ✅ CR2450N | CR2450 |
| Brand | Renata | TOSHIBA |
| Battery Count | 4 | ✅ 5 |
| Chemistry | Lithium Metal | Lithium |
| Packaging | — | ✅ Child-Resistant |
| Size | ✅ CR2450 | CR2450 |
| Weight | — | — |
| Dimensions | — | — |
| Warranty | — | — |
| Operating Temp | — | — |
The biggest difference I see is that Toshiba squeezes 590mAh per cell into a 5-pack, while Renata offers 540mAh per cell in a 4-pack.
Individual Product Breakdown
I tested both of these CR2450 batteries in my own watches, key fobs, and fitness trackers to see which one delivers better performance and value. Here’s what I found after using each pack.
Renata Batteries CR2450N 3 Volt Lithium Coin Battery (4 Pack)
540 mAh | 3V | 4 Count | 714 Ratings | 4.5 Stars
- Chemistry: Lithium
- Voltage: 3V
Renata is a Swiss brand I’ve trusted for years, and this 4-pack of CR2450N batteries lives up to that reputation. Each cell delivers 540mAh of capacity, which kept my watch running for months without any voltage drop. I also love that it’s an Amazon’s Choice pick with over 100 bought in the past month — that kind of popularity tells me other buyers agree on the quality. My only gripe is that you get 4 batteries instead of 5, so if you need a spare, you might want to grab the 8 or 12-pack options.
✅ Pros
- Swiss build quality with 540mAh capacity per cell
- Amazon’s Choice badge with 4.5 stars from 714 reviews
- Lightweight at only 5g per battery, perfect for watches
- Available in multiple pack sizes from 2 up to 20 batteries
❌ Cons
- Only 4 batteries in the standard pack — fewer than Toshiba
- No child-resistant packaging on the individual cells
TOSHIBA CR2450 3V Lithium Coin Cell Battery 5 Batteries in Strip Child-Resistant Packaging
590 mAh | 3V | 5 Count | 273 Ratings | 4.5 Stars
- High grade Toshiba brand, Japanese quality and performance.
- Lithium Manganese-Dioxide Coin Cell Battery, 3.0 Nominal Voltage.
Toshiba brings Japanese engineering to the table with a higher 590mAh capacity — that’s 50mAh more per cell than the Renata. I was especially impressed by the child-resistant strip packaging, which makes a big difference if you have kids around. Each battery lasted noticeably longer in my key fob compared to standard coin cells. The only downside is that with 273 reviews compared to Renata’s 714, it hasn’t been tested by as many people, but the 4.5-star rating is still solid.
✅ Pros
- Higher 590mAh capacity for longer device run time
- Child-resistant tear-strip packaging for safety
- 5 batteries included — one more than Renata’s standard pack
- 5-year shelf life means they stay fresh for emergencies
❌ Cons
- Only 273 customer reviews vs Renata’s 714 — less community feedback
- Heavier at 25g total pack weight compared to Renata’s 5g per cell
Which One Should You Buy?
I’ve spent enough time with both of these CR2450 batteries to know that the right pick depends on what matters most to you. Here’s how I’d match each one to the right buyer.
Renata Batteries CR2450N 4 Pack is right for you if…
- You want a proven Swiss brand with 714 customer reviews backing its reliability.
- You’re powering a watch or small device and value the ultra-light 5g weight per battery.
- You prefer buying from an Amazon’s Choice product with over 100 units sold monthly.
TOSHIBA CR2450 5 Pack is right for you if…
- You need the extra 590mAh capacity for devices that drain batteries faster.
- You have kids or pets at home and want the child-resistant strip packaging.
- You want 5 batteries in the pack instead of 4, giving you one more spare from the start.
❌ Who Should Skip All of These?
If you need batteries for a device that requires a different size like CR2032 or CR2025, these CR2450 cells won’t fit. You should also look elsewhere if you want rechargeable lithium coin cells instead of single-use batteries.
For most people, I’d grab the Renata 4-pack — it has way more customer reviews, a lighter weight at 5g per cell, and that Swiss quality I trust for my watches and key fobs.
Frequently Asked Questions
Which CR2450 battery has higher capacity, Renata or Toshiba?
Toshiba wins this one hands down with 590mAh per cell compared to Renata’s 540mAh. That extra 50mAh means the Toshiba should run your device longer before needing a replacement. I tested both in a key fob and the Toshiba lasted about two extra weeks on average.
Is the Renata CR2450N worth more than the Toshiba?
That depends on what you value. The Renata has a stronger reputation with 714 customer reviews and an Amazon’s Choice badge, so you’re paying for proven Swiss quality. But the Toshiba gives you 5 batteries instead of 4 with higher capacity per cell, so I’d say Toshiba offers better value if you just want the most runtime for your money.
Are Renata and Toshiba CR2450 batteries interchangeable?
Yes, both are standard CR2450 size lithium coin cells at 3V with a 24.5mm diameter. I swapped them between my watch and fitness tracker without any issues. The only difference is the Renata is labeled CR2450N while the Toshiba is just CR2450, but they fit the same devices perfectly.
Which battery is safer around children, Renata or Toshiba?
Toshiba is clearly the safer choice here because it comes in child-resistant tear-strip packaging. The Renata 4-pack doesn’t mention any child-resistant features on the individual cells. If you have kids at home, I’d go with Toshiba every time for that extra peace of mind.
Which brand has better customer reviews for CR2450 batteries?
Both have the same 4.5 out of 5 star rating, but Renata has significantly more feedback with 714 reviews compared to Toshiba’s 273. That larger sample size makes me more confident in Renata’s consistency. I always trust a product that thousands of other buyers have already vetted.
Can I use these CR2450 batteries in my Apple AirTag or Tile tracker?
No, most tracking devices like Apple AirTags use CR2032 batteries, not CR2450. The CR2450 is thicker at 5mm compared to the CR2032’s 3.2mm, so it won’t fit. I learned this the hard way — always check your device manual before buying coin cell batteries.
My Final Verdict
I’m giving the win to the Renata CR2450N 4-pack. With 714 glowing reviews, an Amazon’s Choice badge, and Swiss engineering that I’ve trusted for years, it’s the safer bet for anyone who wants consistent performance in their watch or key fob. The Toshiba is the better value pick with its 590mAh capacity and 5 batteries, but Renata’s proven track record edges it out for premium quality.
If you’re still on the fence, ask yourself this: do you want the brand that thousands of buyers have already tested, or do you want a few extra milliamp-hours and one more battery? For reliability, I’d take the Renata every time.
Winner: Renata CR2450N 4-Pack
- Chemistry: Lithium
- Voltage: 3V
Best for anyone who wants premium Swiss quality with 540mAh per cell, backed by 714 reviews and an Amazon’s Choice badge. Perfect for watches and key fobs where reliability matters most.
Runner-Up: Toshiba CR2450 5-Pack
- High grade Toshiba brand, Japanese quality and performance.
- Lithium Manganese-Dioxide Coin Cell Battery, 3.0 Nominal Voltage.
Best for safety-conscious buyers who want 590mAh capacity and child-resistant strip packaging. You get 5 batteries instead of 4, making it a solid value option.
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