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Li‑ion Replacement Battery – Wahl Designer Senior / Sterling 4 (3.7 V, 7000 mAh, RAC‑B)
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Li‑ion Replacement Battery – Wahl Designer Senior / Sterling 4 (3.7 V, 7000 mAh, RAC‑B)
Key Features:
High-capacity 7000 mAh Li‑ion cell—offers extended runtime
Compact 3.7 V battery perfect for use in Wahl Designer Senior and Sterling 4 devices
Built-in protection circuit against overcharge, over-discharge, and short circuits
Direct-fit replacement for the original RAC‑B battery module
Meets high-quality standards (ISO, RoHS, UN38.3 certifications typical for Li‑ion cells) picclick.com +1 amazon.com +1 ehs.mit.edu +1 batteryuniversity.com +1 amazon.com
Specifications:
| Specification | Value |
|---|---|
| Chemistry | Lithium‑ion (rechargeable) |
| Nominal Voltage | 3.7 V |
| Fully Charged Voltage | ~4.2 V |
| Capacity | 7000 mAh |
| Energy Density | ~26 Wh (based on voltage × capacity) |
| Protection Circuit | Yes – overcharge/discharge & short circuit |
| Charging Requirements | Use standard 5 V USB or dedicated Li‑ion charger, cut-off at 4.2 V |
| Dimensions | Equivalent to OEM RAC‑B pack |
| Certifications | Typically ISO, RoHS, UN38.3 en.wikipedia.org cs.sjtu.edu.cn +4 amazon.com +4 en.wikipedia.org +4 |
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