LiPo voltage: 3.7 V, 7.4 V, 11.1 V or 12 V
Voltage is set by the device's electronics and by how many cells sit in series. This guide explains the common steps and the mistakes that waste a sample round.
Dimension-callout pouch outline — the site's recurring diagram motif. It is a schematic, not a photograph of a product, factory or customer project.
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A single LiPo cell is nominally 3.7 V. Two cells in series give 7.4 V, three give 11.1 V, and four give 14.8 V; 12 V packs are built to suit devices designed around a 12 V input. The device's input range decides the choice, not the battery's marketing: a device built for 7.4 V should not be fed 11.1 V, and a device built for 11.1 V will usually underperform or misbehave on 7.4 V. Check the device specification or the existing battery's label before choosing.
Higher voltage is not higher quality. It is a different electrical configuration for a different device. A higher-voltage pack delivers the same energy with lower current, which can suit motors and longer cable runs, but it also needs a charger and protection circuit matched to that series count. When you inquire, state the voltage your device expects and the connector and protection you need, because a pack's voltage alone does not describe the finished product.
On this site, voltage is always stated per model listing. A listing that says 3.7 V describes a single-cell product; a listing that says 11.1 V describes a three-series pack. If a listing leaves voltage unstated, do not infer it from the model number or from a similar model — ask, and quote the listing you are reading.