Fingerprint Sensor AS608 - A Beginner's Guide
One touch can replace keys. This project uses an optical fingerprint sensor to enroll users and then grant access with a quick scan.
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NiMH Rechargeable AA Battery — 1.2V 2200mAh (Pololu)
The Pololu NiMH Rechargeable AA Battery (1.2V, 2200mAh) is a single rechargeable AA cell — a cost-effective, eco-friendly replacement for disposable alkaline AAs. NiMH cells deliver more consistent voltage under load than alkaline batteries, making them better for motors and servos.
NiMH vs Alkaline
| Property | NiMH (this) | Alkaline |
|---|---|---|
| Voltage | 1.2V (flat discharge curve) | 1.5V (drops steadily) |
| Rechargeable | Yes (500+ cycles) | No |
| High-drain performance | Better | Voltage sags under load |
| Cost per use | Much lower | Higher (single use) |
Technical specifications
| Chemistry | NiMH |
|---|---|
| Voltage | 1.2V |
| Capacity | 2200 mAh |
| Size | AA |
Manila stock. Order before 16:00 PHT, ships today via J&T or LBC. Provincial: 1–3 working days.
Schools / class POs: we accept Purchase Orders for accredited schools and universities. contact us with your PO details.
Returns: 7-day inspection window for DOA units. Email proof of issue and we ship a replacement.
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