Ultra Power UP1800 1800W 28A Dual-Channel 6-14S LiPo/LiHV Charger

The Ultra Power UP1800 is a mains-powered, dual-channel balance charger for the 6–14S LiPo and LiHV packs that run agricultural spray drones and heavy-lift multirotors. It delivers up to 1800 W in total with charge current selectable up to 28 A, so a field team can turn two flight packs around at once.

Key features

• Power sharing: on 220 V mains one channel gets up to 1400 W, or both channels 900 W each (1800 W total); on 110 V, 1200 W single or 600 W × 2.

• Selectable charge current: 10, 15, 20, 25 or 28 A to suit pack capacity and C-rating.

• Three cell profiles: LiPo 4.20 V, LiHV 4.35 V and LiHV 4.45 V per cell.

• Balance and storage modes: balancing at up to 1.5 A per cell, plus 140 W (70 W × 2) of discharge to bring packs down to storage voltage.

• Protection and accessories: overcurrent protection built in; supplied with an 80 cm power cord and two 6–14S adapter boards.

Specifications

• Input: 110–220 V AC

• Max charge power: 1800 W total (220 V: 1400 W single channel or 900 W × 2; 110 V: 1200 W or 600 W × 2)

• Charge current: 10 / 15 / 20 / 25 / 28 A

• Discharge power: 140 W (70 W × 2)

• Channels: 2

• Cell count: 6–14S

• Battery types: LiPo 4.20 V, LiHV 4.35 V, LiHV 4.45 V per cell

• Balance current: up to 1500 mA per cell

• Modes: Balance charge, Storage

• Operating temperature: 0–40 °C

• Storage temperature: -20 to 60 °C

Plan charge times around the power limit, not just the 28 A setting: with both channels running, 900 W into a 14S LiPo near full charge (58.8 V) works out to roughly 15 A per pack. At full output the charger pulls at least 7.8 A from a 230 V supply (1800 W ÷ 230 V, before conversion losses), so run it from a 16 A socket rather than a standard 6 A one.