Why Consider the 671720 Format?
The 20mm length and 17mm width keep the pocket compact, while the 6.7mm thickness provides a concrete boundary for the housing stack-up and retention method.
3.7 V Lithium Polymer Battery
3.7 V 205mAh Lithium Polymer Battery 671720
The 671720 LiPo battery combines a 205mAh rated capacity with a compact 6.7mm × 17mm × 20mm envelope. Its approximately 0.76Wh energy reference is suited to early selection discussions where a short pocket is available and depth is less restrictive than length.
671720 LiPo Battery Reference6.7mm × 17mm × 20mm Format
3.7 V · ≈0.76WhProduct Snapshot
A Short Pocket with a Defined 205mAh Reserve
The 671720 is a compact, relatively thick reference that concentrates energy in a 17mm × 20mm plan area. It helps OEM teams compare a short battery bay against longer, thinner alternatives in the same 3.7 V family.
Balance Short Length with Depth
The 205mAh capacity can support a modest operating interval in low-power products. Review it alongside peak load, charging access and the available enclosure depth.
205mAhRated Capacity
0.76WhCalculated Energy
6.7mmCell Thickness
150mΩInternal Resistance
Technical Data
671720 LiPo Battery Specifications
The table separates confirmed configuration data from calculated electrical references so the 671720 format can be reviewed quickly during product planning.
| Mechanical and Electrical Specifications | |
|---|---|
| Product number | 671720 |
| Nominal voltage | 3.7 V |
| Rated capacity | 205mAh |
| Battery dimensions | 6.7mm × 17mm × 20mm |
| Approximate battery weight | Approx. 4.1g |
| C-rate | 1C |
| Internal resistance | 150mΩ |
| Calculated Electrical References | |
| Standard charge current | Approx. 102.5mA |
| Rapid charge current | Approx. 205mA |
| Standard discharge current | Approx. 41mA |
| Maximum discharge current | Approx. 205mA |
| Calculated energy | Approx. 0.76Wh |
Approximate weight follows the 3.7 V LiPo family reference. Current and energy values are calculated planning references, while internal resistance is a supplied reference; confirm the final charger, protection and load specification for the finished battery.
Product Characteristics & Advantages
Thick Short-Format Energy: Why Evaluate the 671720 LiPo Battery?
The 671720 is a short-format reference for products that cannot provide a long battery channel but can accommodate a deeper pouch. Its selection angle is the tradeoff between concentrated plan area, 205mAh energy and a 150mΩ resistance reference.
The 671720 is a short-format reference for products that cannot provide a long battery channel but can accommodate a deeper pouch. Its selection angle is the tradeoff between concentrated plan area, 205mAh energy and a 150mΩ resistance reference. The calculated electrical references provide a structured starting point for charger, load and protection discussions, while the final battery remains a configurable OEM design.
17mm × 20mm for Concentrated Placement
The small plan area can simplify placement near a board or inside a compact product shell when a longer cell would interfere with other components.
6.7mm for a Defined Stack-Up
Use the thickness to review housing clearance, cushioning and connector height before mechanical approval.
0.76Wh for Modest Runtime Targets
The calculated energy provides an early basis for comparing sensors, low-duty wireless devices and short operating sessions.
150mΩ for Load-Path Discussion
The listed resistance can be considered during startup and voltage-drop planning, with the final result confirmed using the complete battery assembly.
Approx. 4.1g Family Reference
The derived weight can support a preliminary mass estimate for compact wearables, trackers and handheld electronics.
Battery Calculation
Check 671720 Energy and Estimated Runtime
Use the prefilled 671720 values or enter your own load assumptions for a quick energy and runtime estimate.
LiPo Battery Capacity Calculator
Energy is calculated from nominal voltage and capacity. Runtime uses the entered load power and an adjustable efficiency assumption.
Approx. 102.5mA is the approximate standard-charge reference for 205mAh.
0.76WhEstimated Energy
—Estimated Runtime
—Ideal Charge Time
How to Use the Result
The 671720 reference values are prefilled: 3.7 V, 205mAh and a standard-charge reference of approximately 102.5mA. Adjust the load power and efficiency to compare operating scenarios; the calculator does not infer safe limits from capacity alone.
- Energy = voltage × capacity ÷ 1000
- Runtime estimate = energy × efficiency ÷ load power
- Ideal charge time = capacity ÷ entered charge current
- Actual runtime depends on load profile, temperature, cutoff and system losses
Use the result for early comparison, then confirm the charger, protection, connector and final battery specification through sample testing.
Integration Guidance
Fit the 671720 Battery in a Short, Deeper Pocket
The 671720 format is best reviewed as a concentrated battery bay. Confirm the 6.7mm depth, 17mm × 20mm footprint, lead exit and 205mAh operating target together.
Reserve the Depth Honestly
Start with the 6.7mm cell dimension and add the clearance needed for cushioning, retention, wiring and the finished protection arrangement.
Keep the Pocket Close to the Board
The compact plan area may support board-side placement, but check connector height and service access before the housing is frozen.
Compare 0.76Wh with Actual Demand
Use the calculated energy to screen standby and active periods. Device cutoff and peak loads determine whether the nominal reserve is sufficient.
Check Voltage Stability
Use the 150mΩ value as an early reference for voltage-drop questions, then validate peak current and connector resistance in samples.
The stated dimensions and calculated values are reference inputs for design planning. Confirm the finished battery drawing, tolerance, protection, connector and test conditions before production release.
Applications & Solutions
Applications for the 671720 Compact LiPo Battery
The 671720 can be evaluated in compact products where the battery pocket is short and concentrated, and where a moderate energy target is more important than a very thin profile.
01Hearing Aids
The 6.7mm × 17mm × 20mm envelope can be reviewed for compact hearing-aid housings where cell placement, acoustic hardware clearance and low device weight are closely linked.
View Hearing Aid Battery Solutions →
02TWS Earphones
The concentrated 205mAh reference can support an early TWS charging-case or compact audio-device study, subject to the final split-cell and enclosure arrangement.
View TWS Earphone Battery Solutions →
03Smart Bands
The compact plan area can be compared with a smart-band enclosure when the product team is balancing display, sensor, strap and battery retention space.
View Smart Band Battery Solutions →These application paths are starting points for OEM evaluation. Final suitability depends on actual load, runtime, temperature, protection, connector and assembly requirements.
Related Technical Articles
Guidance for 671720 Battery Selection
Use these guides to connect a short, deeper pouch format with current demand, temperature and energy decisions.
Current DemandWhat Is the C Rating of a LiPo Battery and Why It Matters
Use the 671720 current references to frame charger and startup-load questions in a compact pocket.
Read the current demand guide →
Operating ConditionsHow Temperature Affects the Performance of a LiPo Battery
Review temperature effects when a thicker pouch sits inside a tightly enclosed product.
Read the operating conditions guide →
Energy PlanningWhat Is Energy Density in a Lithium Polymer Battery?
Compare the 0.76Wh reference with the short plan area and the device operating interval.
Read the energy planning guide →OEM Battery Support
Start the 671720 Inquiry with the Short Pocket
Provide the 17mm × 20mm pocket, 6.7mm depth, operating interval and electrical load so the 205mAh format can be screened against the finished product.
Useful RFQ Inputs
The key RFQ question is whether the short pocket can accept the depth and still leave room for wiring and protection.
- 17mm × 20mm pocket and 6.7mm depth
- 205mAh target and expected runtime
- Continuous/peak load profile
- Charger and protection conditions
- Lead exit, connector and retention
- Samples, quantity and documentation needs
When a Shorter Pocket Is Not Enough
ZERNE can compare a thinner linear cell, a broader nearby-capacity format or a custom geometry when the 671720 depth-to-footprint balance is not suitable.
Discuss a Custom BatteryFAQ
671720 LiPo Battery Questions
Find answers about the 671720 3.7 V 205mAh lithium polymer battery, including its compact dimensions, calculated energy, resistance and pocket planning.
What are the dimensions of the 671720 LiPo battery?
The 671720 reference is specified as 6.7mm × 17mm × 20mm in thickness × width × length order. Allow additional room for cushioning, retention, leads, connector and protection.
How much energy does the 671720 battery provide?
The rated capacity is 205mAh at a nominal voltage of 3.7 V. The calculated energy is approximately 0.76Wh before cutoff, load, temperature, resistance, protection and system losses.
What is the approximate weight of the 671720 battery?
Using the 3.7 V LiPo family weight reference, the 205mAh configuration is approximately 4.1g. Finished weight depends on leads, connector, protection and assembly details.
What current references apply to the 671720 configuration?
The calculated current references are approximately 102.5mA standard charge, 205mA rapid charge, 41mA standard discharge and 205mA maximum discharge. Confirm the final safe limits for the completed battery.
What is the main tradeoff of the 671720 format?
The 671720 keeps the plan area short at 17mm × 20mm but uses a 6.7mm thickness. It is useful when length is limited and the enclosure can accept more depth.
What should be checked before using 671720 in a handheld product?
Review grip clearance, board placement, 6.7mm depth, connector height, retention and the actual load profile before approving the battery pocket.
Technical Inquiry
Review the 671720 Short-Pocket Battery with ZERNE
Share the compact battery bay, depth allowance, expected operating interval and load profile so the 205mAh reference can be assessed with the finished device.
- 6.7mm depth and 17mm × 20mm pocket
- 205mAh energy target and duty cycle
- Load, charger and resistance conditions
- Connector, samples and production plan