Renata 317 (SR516SW)

Renata 317 (SR516SW) — Ultra‑slim silver‑oxide watch battery

The Renata 317 is a silver‑oxide button cell designed for devices that specify SR516SW. With a profile of approximately 5.8 mm diameter × 1.6 mm height, it fits extra‑thin analog watches and compact instruments that require low‑drain, stable 1.55 V power.

When to choose this battery

• Use if your watch or instrument explicitly calls for 317 or SR516SW.
• Best for low‑drain analog movements (two‑ or three‑hand watches without power‑hungry features).
• Avoid if your device specifies SR516W (high‑drain) or another size; confirm the exact code in the manual or on the old cell.
• Do not substitute taller cells such as SR521SW/LR521; the extra height can stress the movement and compromise seals.

Compatibility and equivalents

• Common codes: 317, SR516SW (IEC/JIS)
• Brand equivalents: Energizer 317, Duracell D317, Maxell/Sony/Seiko/Citizen SR516SW (naming varies by brand)
• Chemistry: Silver‑oxide (preferred for watches). Alkaline LR variants of this size are not equivalent in performance.

Key benefits

• Flat discharge curve for consistent timekeeping
• Low self‑discharge for dependable shelf life
• Mercury‑free, leak‑resistant construction

Expected performance

In a typical low‑drain analog watch, service life is commonly about 12–24 months, depending on movement draw, temperature, lubrication condition, and complications. End‑of‑life signs often include slow or erratic timekeeping or a low‑battery step of the seconds hand (model‑dependent).

Specs at a glance

Installation tips

1. Verify the size: confirm 317/SR516SW on the old cell, caseback, or manual.
2. Check polarity: the positive cap typically faces outward; follow device markings.
3. Use non‑metal tweezers to avoid shorting and cosmetic damage.
4. Inspect gaskets, insulators, and clamps; replace worn seals to maintain water resistance.
5. After installation, test current draw if available; unusual draw may indicate the movement needs service.

Storage and handling

• Store in original packaging, cool and dry; avoid heat and humidity.
• Rotate stock by date code (first in, first out).
• Keep out of reach of children; button cells are a choking and ingestion hazard.

Alternatives and notes

• If only an alkaline LR variant is available, it may run but typically with shorter life and less stable voltage—use as a temporary measure only.
• Different SR sizes with the same diameter but greater height (e.g., SR521SW) can damage thin cases or movement components—do not substitute.

FAQs