$4.6MIL PRE-SEED ANNOUNCEMENT

Batteries

Choose batteries, holders, adapters and boost boards without mixing voltage class, chemistry, connector polarity, charging method or current delivery.

9 V battery path

9 V · PP3

A simple portable-power path, but the cell, holder, snap lead and barrel adapter are different pieces.

from $0.424 boardsIn stock

1S LiPo pouch packs

3.7 V nominal

Same single-cell voltage class, different capacity, size and current headroom. Connector polarity still matters.

from $6.956 boards

Large Li-ion cells

3.6–3.7 V

Higher-capacity single-cell options. Check holder, protection, shipping limits, charge current and enclosure fit.

from $10.272 boardsIn stock

Can I swap these?

Pick the board you have - we'll show what we know about swapping it.

Known swap options (2)

General board checks (7)
  • Match the load or regulator input range, including full-charge voltage, not just the nominal battery label.
  • Confirm chemistry and charge path. Do not charge alkaline or CR2032 cells, and do not charge LiPo or Li-ion packs with the wrong charger.
  • Check JST-PH polarity, barrel polarity, PP3 snap wiring, lead gauge and physical fit before treating connectors as compatible.
  • Estimate peak current as well as runtime. Boost converters and radios can pull much more current from the cell than the output label suggests.
  • Keep battery-management jobs separate: cell, charger, boost converter, protection circuit and power-path switching are not interchangeable.
  • Do not mix old and new cells, different chemistries, or different capacities unless the pack and charger are designed for that exact arrangement.
  • For large lithium packs, leave room for strain relief, enclosure clearance and a safe charging/storage plan.

Parts in this group

1S LiPo pouch packs

Lithium Ion Polymer Battery - 3.7v 1200mAh

Single-cell 3.7 V LiPo pack with JST-PH connector and protection circuit. Needs LiPo-safe charging and polarity checks.

$9.95

Lithium Ion Battery - 110mAh

Tiny 1S 3.7 V Li-ion pack with JST-PH connector and built-in protection. Good for very small loads, not high-current peaks.

$7.53

Lithium Ion Polymer Battery - 3.7V 350mAh

Small 1S 3.7 V LiPo pouch pack. Same chemistry family as the 500 mAh, 1200 mAh and 2500 mAh packs, but runtime, size and current headroom change.

$6.95

Lithium Ion Battery - 400mAh

Small 1S 3.7 V Li-ion pack with JST-PH connector. Capacity is larger than the 110 mAh pack, but voltage class and charging assumptions stay 1S.

$7.98

Lithium Ion Polymer Battery - 3.7v 500mAh

Small 1S 3.7 V LiPo pouch pack. A capacity change is usually easier than a chemistry or voltage change, but connector polarity and current still need checking.

$7.95

Lithium Ion Polymer Battery - 3.7v 2500mAh

Medium 1S 3.7 V LiPo pouch pack. Useful when the design already expects a single-cell LiPo and has enough verified enclosure clearance for the larger pack.

$14.95