Deye SUN-6K-SG03LP1

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Deye inverter

Sits between the 5K and 8K and is the volume seller of the three. Single phase output, so a 240 volt load needs a transformer or a different inverter.

Published figures

Continuous output: 6,000 W
Surge output: 12,000 W
Battery voltage window: 40 to 60 V
Max charge current: 140 A
Battery comms: CAN, RS485
Output: 120 V single phase
Grid interactive: Yes
PV input: 7,800 W, 500 Voc max

Source status: Provisional figure Typical street price $1,000 to $1,500. Figures are recorded from manufacturer material and every one of them should be confirmed against the revision of the document that ships with your unit.

What this inverter will and will not do

It works alongside the utility, which means an interconnection agreement, a permit, and an inspection in most jurisdictions. Budget months, not weeks, for that process.
Output is single phase 120 V. A well pump, an electric dryer, or anything else expecting 240 V needs an autotransformer or a different inverter.
Battery communication runs over CAN, RS485, and closed loop still depends on both sides agreeing on a message format rather than only on a bus standard.

Sizing a battery bank for it

This inverter delivers up to 140 amps of charge current, and that figure, not your daily energy use, sets the minimum pack count. Every battery below is shown at the smallest bank that can absorb the full charge rate.

Battery	Packs needed	Bank capacity	Voltage window	Charge accepted	Comms	Result
Pylontech US3000C	2	7.1 kWh	44.5 to 54.0 V	148 A	CAN, RS485	Conflict
Dyness B4850	3	7.2 kWh	44.0 to 54.0 V	150 A	CAN, RS485	Unverified
SimpliPhi PHI 3.8	2	7.6 kWh	44.0 to 57.6 V	150 A	none	Unverified
Growatt ARK 2.5H	3	7.7 kWh	44.0 to 57.6 V	150 A	CAN, RS485	Unverified
BYD Battery-Box Premium LVS 8.0	1	8.0 kWh	40.0 to 57.6 V	250 A	CAN	Unverified
HomeGrid Stack’d 48V 9.6kWh	1	9.6 kWh	44.8 to 58.4 V	150 A	CAN, RS485	Unverified
Pylontech US5000	2	9.6 kWh	44.5 to 54.0 V	200 A	CAN, RS485	Unverified
Freedom Won eTower 5	2	10.0 kWh	44.0 to 57.6 V	200 A	CAN	Unverified
EG4 LifePower4 48V 100Ah	2	10.2 kWh	44.8 to 58.4 V	200 A	CAN, RS485	Unverified
EG4 LL-S 48V 100Ah	2	10.2 kWh	44.8 to 58.4 V	200 A	CAN, RS485	Unverified
SOK 48V 100Ah Server Rack	2	10.2 kWh	46.4 to 56.0 V	200 A	CAN, RS485	Unverified
Pytes E-BOX 48100R	2	10.2 kWh	44.8 to 58.4 V	200 A	CAN, RS485	Unverified
Jakiper JK48V100 48V 100Ah	2	10.2 kWh	44.8 to 58.4 V	200 A	CAN, RS485	Unverified
Vatrer 48V 100Ah	2	10.2 kWh	40.0 to 58.4 V	200 A	RS485	Unverified
Ruixu 48V 100Ah Server Rack	2	10.2 kWh	44.8 to 58.4 V	200 A	CAN, RS485	Unverified
EG4 LifePower4 V2 48V 100Ah	2	10.2 kWh	44.8 to 58.4 V	200 A	CAN, RS485	Unverified
Pytes V5 48V 100Ah	2	10.2 kWh	44.8 to 58.4 V	200 A	CAN, RS485	Unverified
Pytes R-BOX 48V 100Ah	2	10.2 kWh	44.8 to 58.4 V	200 A	CAN, RS485	Unverified
SOK 48V 200Ah	1	10.2 kWh	46.4 to 56.0 V	200 A	CAN, RS485	Unverified
Jakiper JK48V200 48V 200Ah	1	10.2 kWh	44.8 to 58.4 V	200 A	CAN, RS485	Unverified
LiTime 48V 50Ah	4	10.2 kWh	40.0 to 58.4 V	100 A	none	Conflict
Vatrer 48V 200Ah	1	10.2 kWh	40.0 to 58.4 V	200 A	RS485	Unverified
Ruixu Lithi-2 48V 200Ah	1	10.2 kWh	44.8 to 58.4 V	200 A	CAN, RS485	Unverified
Trophy Battery 48V 100Ah	2	10.2 kWh	44.8 to 58.4 V	200 A	CAN, RS485	Unverified
SunGold 48V 100Ah Rack	2	10.2 kWh	44.8 to 58.4 V	200 A	CAN, RS485	Unverified
Growatt ARK XH 5.1	2	10.2 kWh	44.0 to 57.6 V	200 A	CAN, RS485	Unverified
Rich Solar 48V 100Ah	2	10.2 kWh	44.8 to 58.4 V	200 A	RS485	Unverified
Basen 48V 200Ah	1	10.2 kWh	44.8 to 58.4 V	200 A	CAN, RS485	Unverified
Gobel Power GP-SR1-48100	2	10.2 kWh	44.8 to 58.4 V	200 A	CAN, RS485	Unverified
Victron Lithium Smart 48V 200Ah	1	10.2 kWh	40.0 to 57.6 V	200 A	CAN	Unverified
Fortress eFlex 5.4kWh	2	10.8 kWh	44.8 to 58.4 V	200 A	CAN, RS485	Unverified
Discover AES 48-6650	2	13.3 kWh	42.0 to 57.6 V	260 A	CAN, Modbus	Unverified
Discover AES 42-48-6650	2	13.3 kWh	42.0 to 57.6 V	260 A	CAN, Modbus	Unverified
EG4 PowerPro WallMount 48V 280Ah	1	14.3 kWh	44.8 to 58.4 V	200 A	CAN, RS485	Unverified
EG4 WallMount Indoor 48V 280Ah	1	14.3 kWh	44.8 to 58.4 V	150 A	CAN, RS485	Unverified
Seplos Mason 280 48V	1	14.3 kWh	44.8 to 58.4 V	200 A	CAN, RS485	Unverified
LiTime 48V 100Ah	3	15.4 kWh	40.0 to 58.4 V	150 A	none	Unverified
BigBattery Owl 48V	3	15.4 kWh	44.8 to 58.4 V	150 A	none	Unverified
BigBattery Etheron 48V 15kWh	1	15.4 kWh	44.8 to 58.4 V	150 A	CAN, RS485	Unverified
CHINS 48V 100Ah	3	15.4 kWh	40.0 to 58.4 V	150 A	none	Unverified
Redodo 48V 100Ah	3	15.4 kWh	40.0 to 58.4 V	150 A	none	Unverified
Power Queen 48V 100Ah	3	15.4 kWh	40.0 to 58.4 V	150 A	none	Unverified
ECO-WORTHY 48V 100Ah	3	15.4 kWh	40.0 to 58.4 V	150 A	none	Unverified
HomeGrid Stack’d 48V 19.2kWh	1	19.2 kWh	44.8 to 58.4 V	300 A	CAN, RS485	Unverified
Dyness PowerBox 48V	2	19.2 kWh	44.0 to 54.0 V	200 A	CAN, RS485	Unverified
LiTime 48V 200Ah	2	20.5 kWh	40.0 to 58.4 V	200 A	none	Unverified
BigBattery Rhino 2 48V	2	28.6 kWh	44.8 to 58.4 V	200 A	CAN, RS485	Unverified
Fortress eVault Max 18.5kWh	2	37.0 kWh	44.8 to 58.4 V	266 A	CAN, RS485	Unverified
Fortress eVault 18.5kWh	2	37.0 kWh	44.8 to 58.4 V	200 A	CAN, RS485	Unverified
Rolls S-480 48V AGM	2	41.2 kWh	42.0 to 58.0 V	170 A	none	Unverified

Packs needed is the smallest number that accepts this inverter’s 140 amp charge current, or the published parallel limit where that is lower, in which case the charge rate has to be capped in settings.

Fuse and cable for the battery run

Running flat out this inverter pulls about 125 amps at 48 volts, and a surge takes it to roughly 250 amps. Size the protection for the peak, not the average: a 175 amp Class T fuse at the battery positive terminal and 2/0 AWG cable on the battery run. Class T rather than a standard fuse because a 48 volt lithium bank can deliver enough short circuit current to arc across a fuse that lacks the interrupt rating. Confirm the sizing against your installation manual, which accounts for run length and ambient temperature.

Communication

No manufacturer document tracked here names a specific battery for closed-loop operation with this inverter.

Where the figures come from

Manufacturer documents: Deye download centre. Figures here should be read against the revision that covers your serial number, because manufacturers revise specifications without changing the model name.

Where to buy the Deye SUN-6K-SG03LP1

Current listings and prices for the Deye SUN-6K-SG03LP1 and the parts most builds need alongside it.

Check price on Amazon Battery cable and lugs Class T fuse and holder

Affiliate links. As an Amazon Associate this site earns from qualifying purchases, at no extra cost to you. Prices and stock change often, and a listing appearing here is not a statement that the pairing above is approved.

Questions people actually ask

How many batteries does the Deye SUN-6K-SG03LP1 need?

Enough packs to accept 140 amps of charge current. With a 100 amp rack battery that is 2 of them. Fewer will run the system perfectly well with the charge rate capped in settings, and capping it costs you charging speed on short winter days.

What size fuse and cable does the Deye SUN-6K-SG03LP1 need?

It draws about 125 amps continuously at 48 volts and roughly 250 amps during a surge. That points at a 175 amp Class T fuse and 2/0 AWG cable for the battery run, sized for the fuse rather than the average load. Confirm against the figure in your installation manual, which accounts for run length and ambient temperature.

Which batteries have a documented pairing with the Deye SUN-6K-SG03LP1?

None of the batteries tracked here have a manufacturer document naming this inverter for closed-loop operation. That is a documentation gap, not a verdict on the hardware.

Can the Deye SUN-6K-SG03LP1 run a well pump?

It surges to 12,000 watts, about 250 amps from the battery. Whether the pump starts depends on the pack as much as the inverter, because the BMS is what interrupts a surge it is not rated for. The pairing pages check that figure per battery. A bank of 2 EG4 LifePower4 48V 100Ah is the smallest configuration on this site with a published surge rating that covers it.