This utility app tests 12V car batteries, providing results on their condition, such as good, bad, or needing replacement. It displays the battery's voltage, volume, and overall health.
BT1 Tester by ShenzhenDaCheng software co., LTD



192+ iOS apps curated and reviewed
The best bt1 tester apps on iPhone average 3.7★ across 192+ titles — we've ranked them by what real users actually keep on their phones. Updated May 2026.
| # | App | Price | Rating | Ads | In-App Purchases | Updated |
|---|---|---|---|---|---|---|
| 1 | Free | 1.0★ (1) | No | No | May 2026 | |
| 2 | Free | 4.7★ (787K) | No | No | Jul 2026 | |
| 3 | Free | 4.5★ (925) | Yes | Yes | Jul 2026 | |
| 4 | Free | 2.8★ (227) | Yes | Yes | Jul 2026 | |
| 5 | Free | 4.6★ (1.5K) | No | Yes | Jul 2026 | |
| 6 | Free | 4.4★ (18) | Yes | Yes | May 2026 | |
| 7 | Free | 3.7★ (15) | Yes | No | Jul 2026 | |
| 8 | Free | 1.3★ (41) | No | Yes | May 2026 |



This utility app tests 12V car batteries, providing results on their condition, such as good, bad, or needing replacement. It displays the battery's voltage, volume, and overall health.





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