Jaecoo J5 EV vs BYD Atto 2 vs Proton e.MAS 5: The Real Cost of Charging at Home in 2026

If you're choosing between the Jaecoo J5 EV, BYD Atto 2 and Proton e.MAS 5 purely on running cost, the answer is: it barely matters. All three cost between roughly RM3.00 and RM3.60 per 100km on TNB's off-peak Time-of-Use rate. The number that actually decides your total setup cost is the AC charging limit, and that's the spec most buyers skip past on the brochure.

The 60-Second Answer: They're Almost Tied on Cost — Not on Wiring

On pure electricity cost per 100km, the Proton e.MAS 5 Premium is the cheapest of the three, the Prime is close behind, and the Jaecoo J5 EV and BYD Atto 2 sit within a few sen of each other at the top. The gap between the cheapest and most expensive of the four variants compared here is under RM0.60 per 100km at home.

The bigger difference is what each car demands from your home's electrical supply. The Atto 2 and both e.MAS 5 variants top out at 7kW or lower on AC, which fits a standard single-phase 7.4kW wallbox with no upgrade. The Jaecoo J5 EV accepts up to 11kW AC, which needs a three-phase supply to use fully — a different, costlier installation category.

Model	Battery	AC Charging Limit	Phase Needed at Home
Jaecoo J5 EV	58.9 kWh	11 kW	Three-phase
BYD Atto 2	51.13 kWh	7 kW	Single-phase
Proton e.MAS 5 Prime	30.12 kWh	6.6 kW	Single-phase
Proton e.MAS 5 Premium	40.16 kWh	6.6 kW	Single-phase

Why the AC Charging Limit Matters More Than the kWh Price

A car can only pull as much AC power as its onboard charger allows, no matter how powerful the wallbox you buy. A standard single-phase Malaysian home supply comfortably delivers up to 7.4kW; anything above that requires a three-phase supply, which most landed homes don't have by default and most condo units never will.

The BYD Atto 2's 7kW onboard charger and the Proton e.MAS 5's 6.6kW onboard charger both sit inside that single-phase ceiling, per official launch specifications from BYD Malaysia and Proton. The Jaecoo J5 EV's 11kW onboard charger, confirmed at its Malaysian preview and booking announcement, exceeds it — so a three-phase supply upgrade is the difference between charging in roughly 6.5 hours and stretching that same charge over a much longer window on a single-phase circuit.

Model	AC Limit	Approx. Home Charge Time (10–100%)	Wallbox Fit
Jaecoo J5 EV	11 kW	~6.5 hours (0–100%, needs 3-phase)	22kW-capable unit on 3-phase supply
BYD Atto 2	7 kW	~8 hours (0–100%)	7.4kW single-phase wallbox
e.MAS 5 Prime	6.6 kW	~4.3 hours	7.4kW single-phase wallbox
e.MAS 5 Premium	6.6 kW	~5.9 hours	7.4kW single-phase wallbox

The one mistake to avoid: ordering a wallbox based on the biggest number on the spec sheet instead of checking your home's supply first. Buying a 22kW three-phase unit for an Atto 2 or e.MAS 5 wastes money since neither car can pull past 7kW. Buying a standard single-phase unit for a J5 EV without checking your meter means it will still charge — just capped well below its 11kW potential until the supply is upgraded.

Cost Per 100km on TNB's Time-of-Use Tariff

TNB's domestic Time-of-Use scheme charges 24.43 sen/kWh off-peak and 28.52 sen/kWh during weekday peak hours (2pm–10pm), with weekends and public holidays off-peak all day. Charging overnight is where ToU pays off for any of these three cars.

Model	Est. Efficiency	Off-Peak Cost/100km	Peak Cost/100km
Jaecoo J5 EV	~14.7 kWh/100km	RM3.59	RM4.19
BYD Atto 2	~14.6 kWh/100km	RM3.57	RM4.16
e.MAS 5 Prime	~13.4 kWh/100km	RM3.27	RM3.82
e.MAS 5 Premium	~12.4 kWh/100km	RM3.03	RM3.54

Efficiency here is derived from each model's usable battery capacity divided by its official WLTP range, so treat it as a guide rather than a guarantee — air-con use, driving style and traffic all move the real number. The takeaway holds either way: none of these three cars is meaningfully cheaper to run than the others once you're charging off-peak at home.

What This Means for Your Charging Decision

For Landed & Condo Homeowners

• Check your TNB meter type before ordering a wallbox — most landed homes and virtually all condo units run single-phase, which suits the Atto 2 and e.MAS 5 perfectly with our home wallbox range.

• If you're set on the J5 EV, budget for a three-phase supply assessment alongside the wallbox — our Guru Swift Advance scales up to 22kW and is built for exactly this upgrade path.

• Read our landed-home installation guide before committing to any car if you're not sure what phase your supply is.

For JMB Committees & Property Managers

• Most residents driving an Atto 2 or e.MAS 5 will be happy with a 7.4kW single-phase bay — this should be your default provisioning spec for shared parking, not a blanket three-phase rollout.

• A resident bringing a J5 EV into a single-phase-only building will still charge, just slower; explain this clearly during approval so expectations are set before installation, not after.

• Sub-metering and licensed Wireman installation under ST guidelines apply regardless of which car the resident drives — see our condo/JMB page for the approval process.

FAQ

Which EV is cheapest to charge at home in Malaysia — Jaecoo J5 EV, BYD Atto 2 or Proton e.MAS 5?

On TNB's off-peak ToU rate, the Proton e.MAS 5 Premium is the cheapest per 100km at roughly RM3.03, with the Prime close behind. The Atto 2 and J5 EV are both around RM3.57–3.59 per 100km. The difference across all four is under RM0.60 per 100km, so it shouldn't be the deciding factor on its own.

Do I need a three-phase electricity supply for the Jaecoo J5 EV?

Only if you want to use its full 11kW AC charging capability. The J5 EV will still charge on a standard single-phase 7.4kW wallbox, but at a reduced rate capped by the wallbox rather than the car — a three-phase supply and compatible wallbox are needed to unlock the full 11kW.

Can the BYD Atto 2 charge on a normal 7.4kW home wallbox?

Yes. The Atto 2's onboard charger is rated at 7kW AC, per its official Malaysian launch specifications, which sits comfortably within a standard single-phase 7.4kW wallbox with no supply upgrade needed.

Is the Proton e.MAS 5 Premium cheaper to charge than the Prime?

Per 100km, yes — the Premium's larger 40.16kWh battery and longer WLTP range give it slightly better efficiency than the Prime's 30.12kWh pack. Both use the same 6.6kW single-phase onboard charger, so the wallbox and installation cost are identical either way.

How much does it cost to fully charge each of these EVs at home?

At the off-peak ToU rate of 24.43 sen/kWh, a full charge costs approximately RM14.40 for the Jaecoo J5 EV (58.9kWh), RM12.50 for the BYD Atto 2 (51.13kWh), RM9.80 for the e.MAS 5 Premium (40.16kWh) and RM7.35 for the e.MAS 5 Prime (30.12kWh), excluding fixed capacity and network charges.

Sources & assumptions

• Jaecoo J5 EV specifications (58.9kWh CATL LFP battery, 402km WLTP, 11kW AC / 130kW DC) per paultan.org's coverage of the Malaysian preview and booking announcement, July 2026.

• BYD Atto 2 specifications (51.13kWh Blade Battery, 350km WLTP, 7kW AC / 82kW DC) per BYD Malaysia's official launch reporting, July 2025.

• Proton e.MAS 5 specifications (30.12kWh/40.16kWh LFP battery, 225km/325km WLTP, 6.6kW AC on both variants) per Proton's official launch announcement, October 2025.

• TNB Time-of-Use domestic rates (28.52 sen/kWh weekday peak 2pm–10pm, 24.43 sen/kWh off-peak) effective 1 July 2025 as the current published domestic ToU structure.

• Cost-per-100km figures are calculated from usable battery capacity divided by WLTP range, then multiplied by the ToU energy rate; they exclude TNB's fixed capacity, network and AFA charges, and real-world consumption will vary with driving conditions.

• EVGuru installation pricing is quoted as 'from RM1,590' for single-phase and 'from RM1,650' for three-phase work; final cost depends on a site-specific assessment.

Not sure whether your home or condo unit runs single-phase or three-phase, or which wallbox actually fits your car? Request a free site assessment and we'll confirm your supply, recommend the right charger from our charger hub, and quote the installation before you commit to anything.

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