503035 3.7V 300mAh LiPo Battery

Overview

This listing offers three LiPo models — 503035 / 602030 / 702032 — all rated at 3.7V 300mAh, purpose-selected for outdoor and installed-electronics applications including bicycle lights, LED lamps, GPS trackers, smart locks, and IoT sensor nodes. Each model shares the same voltage and capacity but presents a distinct footprint, enabling product designers to match cell geometry to their specific housing without switching suppliers. The 702032 variant additionally supports up to 20C peak discharge, making it the preferred choice for high-brightness LED bursts and pulsed-load devices.

⚡ Three-Model Specifications at a Glance

🔹 Model 503035 — Wide Flat Profile

🔹 Model 602030 — Medium Square Profile

🔹 Model 702032 — Thick High-Discharge Profile ⭐

📋 Shared Electrical Parameters

✅ Product Highlights

1. 702032 — 20C High-Discharge for Demanding LED Applications Standard 300mAh LiPo cells max out at 1C (300mA), which limits LED brightness in high-output bike lights and safety lamps. The 702032’s 20C discharge rating allows peak current up to 6A — enough to drive multi-watt LED modules at full brightness without voltage sag. If your bike light or LED lamp demands more than a dim glow, the 702032 is the correct cell.

2. Three Footprints, One Supplier, Same Electrical Profile All three models deliver identical 3.7V / 300mAh / 1.11Wh output. If your hardware team needs to evaluate different physical layouts — flat and wide (503035), compact square (602030), or thick and punchy (702032) — you can prototype all three without sourcing from multiple vendors or managing separate qualification processes.

3. GPS & IoT Optimized — Low Self-Discharge Chemistry The polymer gel electrolyte in all three models delivers a self-discharge rate of only 2–3% per month — compared to 5–8% for standard Li-ion cylindrical cells. In GPS trackers and IoT nodes that spend most of their time in deep sleep, this directly translates to longer intervals between charges and more reliable field deployment.

4. Stable Voltage Curve — Critical for LED Color Consistency LiPo cells maintain a relatively flat 3.5–3.9V discharge plateau throughout most of their usable capacity range. For LED bike lights, this means consistent brightness and color temperature across most of the battery’s runtime — unlike alkaline or NiMH cells that dim progressively from the start.

5. Wide Operating Temperature — Built for Outdoor Use Rated for discharge down to -20°C, all three models remain functional in cold-weather cycling conditions. The aluminum-laminate pouch construction also offers better thermal performance than rigid-shell cells in fluctuating outdoor environments.

6. UN38.3 Certified — Air & Sea Freight Compliant All models carry UN38.3 certification, clearing the most common barrier for international battery shipments by air cargo. Critical for buyers exporting to EU, US, and AU markets where non-certified lithium cells face customs seizure risk.

🎯 Application Scenarios & Model Recommendation

📐 Cross-Model Replacement Guide

The 702032 is confirmed compatible as a physical replacement for the following models (verify housing cavity dimensions before substituting):

🔧 Customization Options

📦 Ordering Information

⚠️ Safety & Storage Guidelines

• Store at 3.7V–3.8V storage voltage — never fully charged (4.2V) or fully depleted (<3.0V) during long-term storage
• Keep in a cool, dry location away from heat, direct sunlight, and flammable materials
• For extended storage, use a LiPo-safe bag or fireproof container
• Always charge with a dedicated LiPo charger — do not use NiMH or generic USB chargers without proper LiPo CV/CC profiles
• 702032 high-rate cells: use a charger rated for 20C discharge loads; pair with appropriate BMS or ESC for burst applications
• UN38.3 certified for IATA-compliant international air freight

📩 Three models, one quote. Contact us for datasheet, samples, or volume pricing. Mixed-model orders welcomed. In-stock items ship within 5 business days. OEM / ODM supported.