Sony NP-BG1 Type G Lithium Ion Rechargeable Battery Pack for Sony W Series Digital Cameras
Sony NP‑BG1 Short Description
The Sony NP-BG1 is a compact, InfoLithium Type G rechargeable lithium-ion battery pack designed for use with Sony’s Cyber-shot W-series and select other compact digital cameras, such as the DSC-N1. It provides reliable power, displays remaining battery life on compatible cameras, and has no memory effect.
Key Features
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InfoLithium Technology: Communicates battery status to the camera for precise remaining time and shots.
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Reliable Power Output: Designed for quick charging and consistent performance.
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Memory‑Free Charging: Can be charged and discharged at any time without capacity loss.
Specifications
| Specification | Details |
|---|---|
| Battery Type | Lithium‑Ion (Type G, InfoLithium) |
| Capacity | ~960 mAh / ~3.4 Wh |
| Voltage | 3.6 V (average); Max output: 4.2 V |
| Dimensions | Approx. 35 × 9 × 42 mm (1.5″ × 0.4″ × 1.7″) |
| Weight | ~27 g (1 oz) |
| Memory Effect | None — charge/discharge freely |
| Compatible Cameras | W-series Cyber-shot (W30, W50, W70, W100, W120, W170, W200, etc.), DSC‑N1, H-series, T-series, and more |
Highlights:
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InfoLithium support allows battery status to appear in the camera’s LCD or viewfinder.
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Compact, lightweight, and ideal for field use.
Technical Overview
The NP‑BG1 serves as a convenient and dependable power solution for older Sony point-and-shoot cameras, especially those in the Cyber-shot W, T, H, and N lines. Its InfoLithium capability is especially handy for showing exact remaining battery life, while its compact form factor makes it easy to carry as a spare.
Common use cases include devices like:
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W-series: W30, W50, W70, W100, W120, W170, W200, etc.
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T-series: T20, T100, etc.
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H-series & N-series: e.g., H3, H7, H50, H9, N1, N2.
Battery performance is generally consistent, with users noting good longevity. However, like any rechargeable battery, capacity can diminish over time.
Summary
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Model: Sony NP‑BG1 (Type G, InfoLithium)
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Specs: ~960 mAh, 3.6 V avg (4.2 V max), lightweight (~27 g), compact dimensions
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Advantages: InfoLithium battery status display, memory‑free charging, fast charging capability
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Ideal For: Sony Cyber-shot W-series, and other supporting models like H-, T-, and N-series
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Considerations: Not suitable for newer mirrorless cameras; watch for battery wear with age

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