Most battery-powered video doorbells and security cams in this category use a quick-release rechargeable pack often labeled V4 (about 3.65V). That format is commonly used with Doorbell 2/3/3 Plus/4, Stick Up Cam (2nd/3rd gen), Spotlight Cam, and Peephole Cam. Some 2nd‑generation 2020 doorbells use internal S1 (5‑pin) or S2 (6‑pin) packs. Older first‑gen models may reference the B15169 3.75V pack.

• Check your exact model in the app or on the backplate.
• Match the connector style (5‑pin vs 6‑pin) and part code (V4/S1/S2/B15169).
• Review the compatibility details on the product page before buying.

On Walmart, product pages typically list supported models and connector details, and you can choose delivery or store pickup options at checkout.

Faster drain can happen for several reasons: frequent motion events, long recordings, lots of Live View time, cold weather, or a weak Wi‑Fi signal that triggers reconnect attempts. Over time, rechargeable packs also lose some capacity.

• Adjust motion zones, sensitivity, snapshot frequency, and recording length.
• Improve Wi‑Fi signal near the device (router placement or extender).
• Charge and operate batteries at room temperature when possible.
• Keep device firmware and app settings current.
• Consider rotating a spare using a dual‑slot charger to reduce downtime.

Results vary by environment and usage, but these tweaks can help extend runtime. If performance remains unusually low, testing with another compatible pack can help isolate whether the battery is the main issue.

Common signs include noticeably shorter runtime after a full charge, percentage drops that seem sudden, very slow charging or incomplete charges, more frequent offline/reboot cycles, or any swelling/damage to the pack.

• Try a known‑good cable/charger and gently clean the battery contacts.
• Compare recent runtime to your normal pattern and local weather.
• If you have another pack, swap to see if behavior improves.
• Stop using any battery that appears swollen or damaged and recycle it through local e‑waste options.

If issues persist after basic checks, moving to a compatible replacement can help restore consistency. Product pages in this category list connector types and supported models so you can match the right pack for your device.

These refer to different battery formats and connectors used across battery-powered doorbells and cams.

• V4: A quick‑release rechargeable pack (about 3.65V) used by many models, designed to swap without disassembling the device.
• S1 (5‑pin) / S2 (6‑pin): Internal replacement packs found on certain 2nd‑generation (2020 release) doorbells. Matching the exact pin count is important.
• Legacy codes: Some first‑generation units list part codes like B15169 (3.75V).

Before ordering, confirm your device model, the connector style (5‑pin vs 6‑pin), and any part code printed on your current battery or device documentation. Product pages typically include compatibility lists and connector visuals.

Capacity (mAh) reflects stored energy. Many compatible packs list around 6040–8000 mAh. In general, higher capacity can offer longer runtime, but actual results depend on motion activity, recording length, Wi‑Fi strength, and temperature.

• Match voltage and format (e.g., ~3.65V quick‑release V4, or the correct S1/S2 connector).
• Verify physical fit and supported models on the product page.
• Consider a spare plus a charger station for quick swaps.
• Charge and store at moderate temperatures to help preserve capacity.

Choosing a capacity that fits your device and usage tends to provide the best balance. Compatibility details on each Walmart product page can help you select the right option.