3.7V 800mAh LiPo Batteries — Compare Sizes for Your Device
Maximize usable battery capacity within your available space.
Compare 800mAh pouch-cell models by thickness, width and length for compact electronics, wearables, portable sensing and monitoring devices and other space-constrained products. If your battery cavity is tightly limited, THOR Power can review alternative pouch-cell geometries and verified compact cell options to help identify a practical balance between runtime and device size.
Bare & Estimated Finished Sizes
Custom PCM & Connector Options
Engineering Fit Review
Technical Overview
An 800mAh LiPo battery suits compact portable devices that need longer runtime than a sub-500mAh cell while staying small and light enough to wear or carry. The core engineering decision at this capacity is how efficiently the finished pack uses a constrained cavity; use the LiPo battery dimensions workflow to separate cell size from finished-pack fit. In devices such as a wearable air-quality monitor or a compact medical wearable, the load is usually a steady moderate draw with periodic sensing or short-range wireless activity, so capacity, finished-pack thickness and cell geometry often matter more than raw peak current. Use the LiPo size and device-fit guide, then select by the finished-pack envelope and verified device load.
Find an 800mAh LiPo Battery for Your Available Space
There is no single standard 800mAh LiPo battery size. The same nominal capacity can be achieved using different thin-and-wide, balanced, narrow-and-long or compact pouch-cell geometries. For small electronic devices, even a few millimeters in thickness, width or length can determine whether a battery fits. Start with your maximum available battery space and compare the potential models below.
10 listed 800mAh models
Finished dimensions depend on PCM, insulation, connector and wire-harness configuration and are confirmed on the engineering drawing for the selected model.
Use Limited Battery Space More Efficiently
For compact electronics, wearables, portable sensors and other space-constrained devices, even a small difference in battery thickness, width or length can affect the entire enclosure design. THOR Power compares multiple 800mAh pouch-cell geometries to help use the available battery cavity efficiently while maintaining the required runtime, electrical performance and mechanical clearance. Where verified model data supports it, compact or higher-energy-density pouch-cell options can also be evaluated when a standard geometry does not fit.
Use limited battery space more efficiently without unnecessarily increasing the device size.
Same 800mAh capacity, very different geometry. The listed models below all store 800mAh, yet each one uses a different thickness × width × length to fit a different kind of cavity:
THOR-504041
5.0 × 40 × 41 mm — thin and nearly square. Spreads 800mAh across a wide, shallow footprint for a flat cavity.
THOR-523050
5.2 × 30 × 50 mm — still thin, but longer and narrower. Suits a slim enclosure that has length to spare.
THOR-802346
8.0 × 23 × 46 mm — thick and narrow. Fits a deeper, narrow channel where width is the hard limit.
All three store 800mAh, but they need completely different space inside a device. If thickness is the fixed constraint, compare the thin-and-wide geometries first; if width is the limit, a thicker, narrower cell can be acceptable to shrink the footprint. The capacity is the same — the geometry decides the fit.
If no 800mAh model fits, a nearby capacity may provide a better balance between runtime and mechanical clearance. A slightly lower capacity can reduce thickness or footprint, while a slightly higher capacity may be possible if additional enclosure space is available.
Validate 800mAh Current Capability for Compact Portable Loads
The 800mAh rating describes charge capacity, not maximum continuous or peak current. In a wearable or portable sensor device, the load is often a steady moderate draw with periodic peaks from sensing, data logging or short-range wireless transmission, and these must be checked against the actual electronics. Capability depends on the specific cell model, C-rate, internal resistance, PCM, wiring and temperature. Use the battery runtime and capacity guide for energy planning, then validate loaded voltage, pulse duration and low-state behavior. A custom LiPo battery configuration should be reviewed when the standard assembly does not satisfy these constraints.
Bare Cell Size vs Finished Battery Size
The bare pouch-cell dimensions do not represent the complete finished battery. PCM, insulation, lead wires, connector position and wire exit direction can increase the final dimensions. For compact devices, even a few additional millimeters may affect fit.
In a compact portable device, the finished battery must clear the PCB, connector path and any sensor module or strap/clip attachment, not only the nominal cell cavity.
Bare Cell Size
Raw pouch-cell dimensions
(T × W × L)
→
+ PCM, Insulation, Wires, Connector
Protection circuitry, insulation wrap, lead wires, connector & wire exit
→
Estimated Finished Size
Approximate assembled dimensions for initial screening
Use estimated finished dimensions for initial screening and confirm the final drawing before sample production.
How to Choose an 800mAh LiPo Battery
Measure the Space
Record the maximum battery cavity: thickness × width × length.
Allow Clearance
Allow for manufacturing tolerance, insulation, assembly and long-term expansion where applicable.
Confirm the Load
Provide continuous and peak current requirements. Capacity alone does not define current capability.
Define the Assembly
Confirm PCM, connector, polarity, wire length, wire exit direction and labeling.
Verify With Samples
Confirm the final drawing, finished dimensions and sample fit before volume production.
Custom 800mAh LiPo Battery Configuration
Tell us your enclosure, load and connection requirements. THOR Power can review suitable 800mAh cell dimensions and the finished battery configuration before sample production. All custom configurations remain subject to engineering confirmation.
Connector
Wire Length
Polarity
Wire Exit Direction
Label
Need an 800mAh LiPo Battery for Your Project?
Tell us your available battery space, application, working current, peak current, connector requirement and quantity. Our engineering team will review the suitable 800mAh model and finished battery configuration.
- Bare Cell Size
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- Approx. Finished Size
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800mAh LiPo Battery FAQ
What size is an 800mAh LiPo battery?
There is no single standard size. An 800mAh LiPo battery can be manufactured in different thickness, width and length combinations depending on pouch-cell geometry and design. Compare the estimated finished dimensions against your available device space.
Why do 800mAh models have different dimensions?
The same nominal capacity can be achieved using different pouch-cell geometries and internal cell designs. Some models prioritize lower thickness, while others reduce width or length to fit different enclosure shapes.
Is bare-cell size the same as finished battery size?
No. Bare-cell size refers to the pouch cell itself. The finished battery may also include PCM, insulation, lead wires and a connector, which can increase the final dimensions.
Can an 800mAh LiPo battery be made smaller?
Possibly. A different pouch-cell geometry may reduce thickness, width or length while keeping the same nominal capacity. Where verified model data supports it, compact or higher-energy-density options can also be evaluated. Current capability, cycle life and mechanical clearance must still be confirmed.
What current can an 800mAh battery deliver?
Continuous and peak current capability depends on the specific cell model, C-rate, PCM specification and finished battery configuration. Provide your required continuous and peak load so the suitable model can be confirmed.
What if no 800mAh model fits my device?
Provide your maximum battery cavity dimensions. We can evaluate another pouch geometry, a nearby capacity or a verified compact cell option to identify a better fit.
Can an 800mAh LiPo battery be considered for a wearable or portable sensor device?
It can be considered when the finished-pack envelope fits the enclosure and the selected cell supports the measured steady load plus any sensing or short-range wireless peaks. Confirm PCM behavior, connector routing, charging strategy, temperature range and project-specific validation with the actual device electronics, whether it is a wearable air-quality monitor, a personal safety pendant or a small portable meter.
Related Pages
Why compare nearby capacities: A 600mAh pack trades runtime for a thinner or lighter pack when a wearable or sensor enclosure is tightly constrained. A 900mAh or 1000mAh pack adds runtime when the complete enclosure and charging plan allow slightly more room.