# PKCELL LiPo 3.7 V 500 mAh LP503035 > PKCELL LP503035 lithium-polymer pouch cell (Adafruit 1578): 3.7 V nominal, 500 mAh (450 mAh min), about 1.9 Wh, 4.2 V charge, 3.0 V cut-off, 1C (0.5 A) continuous discharge, >500 cycles, built-in 1S protection (S-8261), 35 × 30 × 5 mm, 10.5 g, red/black leads to a JST PH 2-pin plug. - Manufacturer: PKCELL - Part number: LP503035 - Category: Batteries - Canonical page: https://www.xirkit.io/products/pkcell-lipo-3-7-v-500-mah-lp503035-e8bd - Pinout: https://www.xirkit.io/products/pkcell-lipo-3-7-v-500-mah-lp503035-e8bd/pinout - Structured JSON: https://www.xirkit.io/products/pkcell-lipo-3-7-v-500-mah-lp503035-e8bd/data.json - Source: Xirkit structured parts catalog — every value traced to a cited document; unknowns are explicit. ## Key specifications | Property | Value | | --- | --- | | Chemistry | li-po | | Form factor | pouch 503035 | | Configuration | 1S1P | | Nominal voltage | 3.7 V | | Charge voltage | 4.2 V | | Cut-off voltage | 3 V | | Capacity | 500 mAh | | Minimum capacity | 450 mAh | | Energy | 1.9 Wh | | Max continuous discharge | 0.5 A | | Standard charge current | 0.1 A | | Max charge current | 0.5 A | | Protection circuit | built in | | Cycle life | 500 cycles | | Dimensions | 35 × 30 × 5 mm | | Operating temperature | -20 to 60 °C | | Certifications | UN38.3 test report, MSDS | ## Pinout (2 pins, 0 with electrical limits) | Pin | Position | Kind | Chip pad | Functions | VIH | VIL | VOH | VOL | IOH | IOL | 5 V tolerant | | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | | RED | JST PH-2P | positive | — | red | — | — | — | — | — | — | — | | BLACK | JST PH-2P | negative | — | black | — | — | — | — | — | — | — | ## Where to buy | Supplier | Price | Stock | Checked | URL | | --- | --- | --- | --- | --- | | www.adafruit.com | 7.95 USD | in_stock | 2026-10-01 | https://www.adafruit.com/product/1578 | ## FAQ **What voltage powers the PKCELL LiPo 3.7 V 500 mAh LP503035?** Supply range 3–4.2 V. **How much does the PKCELL LiPo 3.7 V 500 mAh LP503035 cost?** From $7.95 at www.adafruit.com. Prices are observed unit prices before tax and shipping. **What are the PKCELL LiPo 3.7 V 500 mAh LP503035 dimensions?** 35 × 30 × 5 mm. A STEP model is available for enclosure fit checks. **Where does this PKCELL LiPo 3.7 V 500 mAh LP503035 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. ## Sources - [PKCELL LiPo 3.7 V 500 mAh LP503035 datasheet](https://cdn-shop.adafruit.com/product-files/1578/Datasheet.pdf) - [www.adafruit.com listing](https://www.adafruit.com/product/1578) ## Part graph ### Alternatives (by use case) - [PKCELL LiPo 3.7 V 350 mAh LP552035](https://www.xirkit.io/products/pkcell-lipo-3-7-v-350-mah-lp552035-0fc3) — Both serve battery-powered and portable builds — check the trade-offs; $6.95 vs $7.95 - [PKCELL 18650 Li-ion 3.7 V 2200 mAh (PCM)](https://www.xirkit.io/products/pkcell-18650-li-ion-3-7-v-2200-mah-pcm-2b9c) — Both serve battery-powered and portable builds — check the trade-offs; $7.95 vs $9.95 - [PKCELL LiPo 3.7 V 1200 mAh LP503562](https://www.xirkit.io/products/pkcell-lipo-3-7-v-1200-mah-lp503562-3ff4) — Both serve battery-powered and portable builds — check the trade-offs; $7.95 vs $9.95 - [Molicel INR-21700-P45B](https://www.xirkit.io/products/molicel-inr-21700-p45b-5c23) — Both serve battery-powered and portable builds — check the trade-offs; $7.95 vs $6.99 - [PKCELL LiPo 3.7 V 2500 mAh LP785060](https://www.xirkit.io/products/pkcell-lipo-3-7-v-2500-mah-lp785060-70b2) — Both serve battery-powered and portable builds — check the trade-offs; $7.95 vs $14.95 - [PKCELL LiPo 3.7 V 2000 mAh LP803860](https://www.xirkit.io/products/pkcell-lipo-3-7-v-2000-mah-lp803860-c4f4) — Both serve battery-powered and portable builds — check the trade-offs; $7.95 vs $12.5 - [Molicel INR-21700-P50B](https://www.xirkit.io/products/molicel-inr-21700-p50b-e161) — Both serve battery-powered and portable builds — check the trade-offs; $7.95 vs $9.99 - [PKCELL LiPo 3.7 V 420 mAh LP552535](https://www.xirkit.io/products/pkcell-lipo-3-7-v-420-mah-lp552535-38a6) — Both serve battery-powered and portable builds — check the trade-offs; $6.95 vs $7.95 - [PKCELL LiPo 3.7 V 400 mAh LP801735](https://www.xirkit.io/products/pkcell-lipo-3-7-v-400-mah-lp801735-452a) — Both serve battery-powered and portable builds — check the trade-offs; $6.95 vs $7.95 - [PKCELL LiPo 3.7 V 105 mAh LP401230](https://www.xirkit.io/products/pkcell-lipo-3-7-v-105-mah-lp401230-ea0e) — Both serve battery-powered and portable builds — check the trade-offs; $5.95 vs $7.95 - [PKCELL LiPo 3.7 V 350 mAh LP552530](https://www.xirkit.io/products/pkcell-lipo-3-7-v-350-mah-lp552530-06ed) — Both serve battery-powered and portable builds — check the trade-offs; $5.95 vs $7.95 - [PKCELL LiPo 3.7 V 150 mAh LP402025](https://www.xirkit.io/products/pkcell-lipo-3-7-v-150-mah-lp402025-6146) — Both serve battery-powered and portable builds — check the trade-offs; $5.95 vs $7.95