2-Pack OVONIC 14.8V 8000mAh 35C 4S Softcase LiPo Battery Pack with XT90 Connector for Large-Scale RC Vehicles, Boats, and Fixed-Wing Aircraft

Overview

Large-scale RC vehicles, long-range aircraft, and high-power marine platforms demand high energy density to achieve extended operational runtimes without adding unnecessary dead weight. Running under-capacity battery setups often results in premature voltage drops and shortened driving or flying sessions.

OVONIC 14.8V 8000mAh 35C 4S Softcase LiPo Battery Pack is built to deliver high capacity reserves in a standard softcase footprint measuring 138.5 × 43.22 × 44.89 mm. Packing an 8000mAh capacity and a 35C continuous discharge rate, this 4S pack provides smooth, stable power output for extended bash sessions, long aerial cruises, and marine applications. Pre-wired with low-resistance 10 AWG silicone wire and a high-current XT90 plug, this 2-pack combo offers dual-battery versatility for individual 4S setups or combined 8S series setups.

Primary Applications & Compatibility

Designed for 4S (14.8V) power systems utilizing XT90 main plugs and battery trays capable of accommodating dimensions of 138.5 × 43.22 × 44.89 mm:

• Large-Scale 1/8 & 1/10 RC Trucks & Buggies: Fits 4S-capable RC monster trucks, crawlers, and bashers requiring long runtimes and XT90 connections.

• RC Boats & Marine Platforms: Ideal for high-endurance RC speedboats and marine models where long runtimes and steady current delivery are critical.

• Large Fixed-Wing Aircraft & Multirotors: Provides high capacity and balanced weight distribution for large RC airplanes, EDF jets, and UAV multirotors requiring 14.8V input.

• Dual-Pack 8S Configured Rigs: Can be wired in series using an appropriate 8S series adapter to power 8S (29.6V) ESC systems.

Key Features

• High-Capacity 8000mAh Reserve: Delivers maximum runtimes per charge cycle, minimizing downtime during field and track sessions.

• Consistent 35C Discharge Output: Provides steady continuous current delivery to maintain motor RPM and ESC efficiency under continuous load.

• Heavy-Duty 10 AWG Wiring: Built with ultra-low-resistance 10 AWG flexible silicone wire to handle high amperage draw with reduced resistance and thermal loss.

• Pre-Fitted XT90 Connector: Comes factory-assembled with gold-plated XT90 discharge connectors for secure, anti-spark power connections.

• JST-XHR-5P Balance Lead: Equipped with a standard 5-pin JST-XHR balance port for cell balance monitoring and maintenance charging.

Specification

• Brand: OVONIC

• Battery Type: Lithium Polymer (LiPo)

• Cell Configuration: 14.8V / 4S1P / 4 Cells

• Capacity: 8000mAh

• Nominal Voltage: 14.8V

• Discharge Rate: 35C Continuous

• Total Energy: 118.4Wh per pack

• Main Connector Type: XT90 Plug

• Balance Connector: JST-XHR-5P

• Wire Gauge: 10 AWG

• Case Type: Softcase

• Dimensions: 138.5 × 43.22 × 44.89 mm | 5.45 × 1.70 × 1.77 in

• Net Weight: 571.67 g | 1.26 lbs (per pack)

• Package Quantity: 2-Pack

What's in the Box

• 2 × OVONIC 14.8V 8000mAh 35C 4S Softcase LiPo Batteries with XT90 Plug

• 2 × OVONIC Brand Stickers

• 1 × User Manual

Safety & Operating Guidelines

• Voltage & Connector Check: Verify that your ESC and motor are rated for 14.8V (4S) operation, accept XT90 plugs, and fit battery tray dimensions of 138.5 × 43.22 × 44.89 mm.

• Charging Instructions: Charge exclusively using a dedicated LiPo balance charger set to 4S balance mode. Cease charging immediately once each cell reaches 4.20V. Never leave charging batteries unattended.

• Low-Voltage Protection: Set your ESC low-voltage cutoff (LVC) to a minimum of 3.4V or 3.5V per cell. Do not allow cell voltage to fall below 3.20V under load.

• Initial Cell Balancing: If a new battery shows slight voltage imbalances or drains quickly on initial use, perform 2 to 3 low-amperage balance charge/discharge cycles to equalize cell resistance.

• Storage Maintenance: For storage periods exceeding 48 hours, store batteries at 3.80V to 3.85V per cell in a cool, dry area inside a fire-retardant LiPo safety bag.