Battery-powered and portable builds
Rechargeable 3.7 V 400 mAh li-po cell with built-in protection — runs a board from a single-cell LiPo/Li-ion charger input.
Engineering inference
PKCELL
PKCELL LiPo 3.7 V 400 mAh LP801735
PKCELL LP801735 lithium-polymer pouch cell (Adafruit 3898): 3.7 V nominal, 400 mAh (380 mAh min), 4.2 V charge, 3.0 V cut-off, 1.5C (600 mA) continuous discharge, 1C (400 mA) max charge, ≥500 cycles, built-in 1S protection (R5402N101KD), max 37 × 17.5 × 8.2 mm, 8.2 g, 25 mm leads to a JST PH 2-pin plug. Sized to fit between the headers of a Feather.
LP801735Development boardPrice$6.95www.adafruit.com · in stock
Buy at www.adafruit.com Overview
Motor essentials
Facts about the complete product. Unknown values remain open design questions.
- Rated voltage
- 3.7 V
A good fit for
Guidance to help you shortlist. The basis is shown for each recommendation.
No-load speed, rated performance and stall limits describe different operating points. A stall specification is not a continuous operating rating.
3D model & CAD
3D model & CAD files
Generated from the datasheet's dimensioned drawing and measured against it. Download the STEP to check fit in your own enclosure.
- Envelope (L × W × H)
- 37 × 17.5 × 8.2 mm
- Verification
- generated
- Envelope complete
- Yes
Electrical interface
Electrical interface
Cell ratings and the leads you connect to — size the charger and load from these.
- Chemistry
- li-po
- Nominal voltage
- 3.7 V
- Charge voltage
- 4.2 V
- Cut-off voltage
- 3 V
- Capacity
- 400 mAh
- Max continuous discharge
- 0.6 A
- Standard charge current
- 0.2 A
- Protection circuit
- Built in
| Lead / terminal | Role | Notes |
|---|---|---|
| RED | positive | UL1007 24 AWG, 25 mm, to the JST PH 2-pin plug |
| BLACK | negative | UL1007 24 AWG, 25 mm, to the JST PH 2-pin plug |
Charge only with a charger for this chemistry and charge voltage. The protection circuit is a last resort, not a charge controller.
Specifications
Motor performance
No-load, rated-load and stall figures retain their separate test conditions.
- Rated voltage
- 3.7 V
Stall torque and current are not continuous ratings. Check the duty cycle and starting load when choosing the driver and power supply.
Thermal limits by level
Product operating conditions, chip ambient ratings, package case limits and junction maxima remain separate.
Motor body
- Product operating range
- -20 to 60 °C
Mechanical dimensions
Reported product dimensions may exclude protruding components. Unknown height does not establish a complete clearance envelope.
- Length
- 37 mm
- Width
- 17.5 mm
- Reported height / thickness
- 8.2 mm
Attached generated geometry is an approximate envelope. A generated outline does not establish an electrically verified PCB footprint.
Board connectors
| ID / type | Pins | Pitch | Notes |
|---|---|---|---|
| jstJST PH 2-pin plug (maker drawing: "Reverse the plug"; Adafruit: polarity matches Adafruit chargers) | 2 | 2 mm | — |
Software and certifications
- Recorded certifications
- UN38.3 test report, MSDS
Complete structured record
Every available field, including details beyond the summaries. Null means the value has not been established.
Sourcing & files
Supplier offers
US / USD is the target market. Observed price and stock are separate from a delivery quote.
www.adafruit.com
US · USD
$6.95Minimum quantity unknown
- Observed stock
- in stock
- Checked
- Oct 1, 2026, 12:07 PM UTC
- Delivery estimate
- Not quoted
Observed within the last 24 hours. Confirm the current supplier quote.
Visit supplier (opens in a new tab)Delivery depends on quantity, postal code and shipping method. A dispatch statement such as “ship today” is not an arrival estimate.
Design files and references
Each source keeps its own verification status. Confirm the part revision and file contents before using it in a design.
Datasheet (opens in a new tab)
Manufacturer reference
Adafruit 3898 — 400 mAh LiPo with JST PH lead (store photo) (opens in a new tab)
Unverified reference
store gallery photo of the cell with JST-PH lead
STEP (generated from datasheet drawing) — link unavailable
Generated asset
cad_check passed
Generated envelope geometry may also exist for this record. It does not replace manufacturer CAD or a verified electrical land pattern.
Source evidence
Document provenance, retrieval dates and the field groups supported by each source.
Supports: spec.compliance.certifications, spec.constraints.electrical.supply_voltage_max_v, spec.constraints.electrical.supply_voltage_min_v, spec.constraints.electrical.supply_voltage_nominal_v, spec.constraints.thermal.operating_temp_max_c, spec.constraints.thermal.operating_temp_min_c, spec.constraints.thermal.other.charge_temp_max_c, spec.constraints.thermal.other.charge_temp_min_c, spec.constraints.thermal.other.storage_temp_max_c, spec.constraints.thermal.other.storage_temp_min_c, spec.geometry.body_length_mm, spec.geometry.cad.bbox.height_mm, spec.geometry.cad.bbox.length_mm, spec.geometry.cad.bbox.width_mm, spec.geometry.cad.envelope_complete, spec.geometry.cad.mesh_path, spec.geometry.cad.step_path, spec.geometry.cad.verification, spec.geometry.dimensions.height_mm, spec.geometry.dimensions.length_mm, spec.geometry.dimensions.width_mm, spec.geometry.other.weight_g, spec.provides.capacity_mah, spec.provides.cell_configuration, spec.provides.cell_size, spec.provides.charge_voltage_v, spec.provides.chemistry, spec.provides.cutoff_voltage_v, spec.provides.cycle_life, spec.provides.energy_wh, spec.provides.features, spec.provides.form_factor, spec.provides.max_charge_current_a, spec.provides.max_discharge_current_a, spec.provides.min_capacity_mah, spec.provides.nominal_voltage_v, spec.provides.other.standard_discharge_current_a, spec.provides.protection_circuit, spec.provides.standard_charge_current_a, spec.usage.connectors, spec.usage.pinout, spec.usage.pinout_complete, spec.usage.requirements.other.charger_required, spec.usage.requirements.rated_voltage_v
sha256 659a6f7c440d80a67268723b5abdf3a0d9f27c96ca1a057e73ad89f6b8095818
Supports: offers
FAQ
PKCELL LiPo 3.7 V 400 mAh LP801735 questions
What voltage powers the PKCELL LiPo 3.7 V 400 mAh LP801735?
Supply range 3–4.2 V.
How much does the PKCELL LiPo 3.7 V 400 mAh LP801735 cost?
From $6.95 at www.adafruit.com. Prices are observed unit prices before tax and shipping.
What are the PKCELL LiPo 3.7 V 400 mAh LP801735 dimensions?
37 × 17.5 × 8.2 mm. A STEP model is available for enclosure fit checks.
Where does this PKCELL LiPo 3.7 V 400 mAh LP801735 data come from?
Every value in this record is traced to a source — 2 documents including the board and chip datasheets — with the page and table cited per value. Unknowns are left explicit, never guessed.