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CalTech Victron Energy · Solar · Batteries · Laptops | Randburg | Nationwide Delivery

Built for 1440p. No compromises anywhere. R28,809 — full breakdown 👇- CPU: AMD Ryzen 7 5700 (8-core, 16-thread)- Motherb...
15/09/2026

Built for 1440p. No compromises anywhere. R28,809 — full breakdown 👇

- CPU: AMD Ryzen 7 5700 (8-core, 16-thread)
- Motherboard: Gigabyte B550M-K
- GPU: Gigabyte RTX 5060 Ti 8GB GDDR7
- RAM: Corsair Vengeance 16GB DDR4-3000
- Storage: Samsung 990 PRO 1TB NVMe
- PSU: Gigabyte P650G 650W 80+ Gold
- Case: ASUS A21 Plus ARGB Black

Every part shown here is in stock, right now, on our site.

🔧 Want it built, not just bought? Assembly available for R499.

🛒 caltech.co.za
📞 065 083 8726
📧 [email protected]
📍 Randburg, Johannesburg

The upgrade your living room needs. 📺🔊Bring movie nights, match days and everyday streaming to life — crisp 4K picture, ...
10/09/2026

The upgrade your living room needs. 📺🔊

Bring movie nights, match days and everyday streaming to life — crisp 4K picture, immersive sound and a clean setup that looks right at home in any modern living space.

Upgrade the way you watch. Upgrade the way you listen.
Shop both — link in bio.

Samsung 43” U8000F 4K Crystal UHD Smart TV — R5,970
Hisense HS5100 Soundbar | 5.1 Channel System — R2,749

🛒 caltech.co.za
📞 065 083 8326
📧 [email protected]
📍 Randburg, Johannesburg

IP67. Built to go anywhere.This one lives on a tailgate through a mud track and stillstarts the fridge that night. Same ...
09/09/2026

IP67. Built to go anywhere.

This one lives on a tailgate through a mud track and still
starts the fridge that night. Same battery bolted into a home
inverter runs your essentials through an Eskom cycle without
you thinking about it.

That’s the point of lithium done properly. No topping up, no
watching the voltage, no losing half your capacity to keep it
healthy. You get the full 1280Wh and you get it for years.

Dust-tight. Sealed against water. Rated from -20°C to 60°C.

Solar. Backup. Off-grid. Caravan. Marine.

Lithtech 12V 100Ah LiFePO4 — R4,999.00
Full specs on the site. Nationwide delivery.

🛒 caltech.co.za
📞 065 083 8326
📧 [email protected]
📍 Randburg, Johannesburg

Everyone upgrades the laptop. Almost nobody upgrades the screen. 🖥️We rebuilt our own desk to prove the point — and the ...
07/09/2026

Everyone upgrades the laptop. Almost nobody upgrades the screen. 🖥️

We rebuilt our own desk to prove the point — and the monitor did more for the workflow than the laptop did.

🖥️ Dell Pro P27 P2726H — R3,951
27” Full HD, 5ms response. One screen instead of two.

💻 Dell Pro 14 Essential — R21,733
Intel Core 5 120U | 16GB RAM | 512GB SSD. Compact enough to carry, strong enough for a full workday.

⌨️ Logitech G413 SE — R1,526
Tactile mechanical switches, aluminium build, anti-ghosting.

🖱️ Logitech MX Master 4 — R2,341
Wireless, 3-device switching, tracks on almost any surface.

Full desk: R29,551 — or shop each piece on its own.

🛒 caltech.co.za
📞 065 083 8326
📧 [email protected]
📍 Randburg, Johannesburg

Quick answers about the Victron MultiPlus 12/500/20-16 ⚡This compact inverter/charger is one of the most common Victron ...
20/08/2026

Quick answers about the Victron MultiPlus 12/500/20-16 ⚡

This compact inverter/charger is one of the most common Victron units we get asked about — here’s what it actually does.

🔴 Switches to battery power in under 20 milliseconds — your electronics won’t even notice the outage.

🔴 Run your router, laptop, and TV together and you’re using roughly 90–100W of the available 430W. Real headroom, not a tight squeeze.

Questions about your setup? Drop them below or send us a message.

🛒 caltech.co.za
📞 065 083 8326
📧 [email protected]
📍 Randburg, Johannesburg

Eskom’s tariffs aren’t slowing down. Your setup should be. ⚡This is what came off the latest delivery — genuine Victron ...
20/08/2026

Eskom’s tariffs aren’t slowing down. Your setup should be. ⚡

This is what came off the latest delivery — genuine Victron components, in stock now:

🔵 Victron Blue Smart Charger 12V | 4A — R1,249
Configurable 2A or 4A charging, IP65-rated, recovers batteries from 0V, rated to -40°C.

☀️ Victron SmartSolar MPPT 75/10 — R849
75V max PV input, up to 290W array capacity (24V), advanced partial shading algorithm.

🔌 Victron MultiPlus 12/500/20 — R4,999
500VA inverter, 20A charger, uninterrupted AC power on grid loss.

Premium components. Expert advice. Fast delivery.

🛒 caltech.co.za
📞 065 083 8326
📧 [email protected]
📍 Randburg, Johannesburg

18/08/2026

The Victron range just landed. 📦⚡

Blue Smart Chargers, SmartSolar MPPT controllers, MultiPlus-II inverters — fresh stock, straight off the delivery.

Got a system you’re planning? Send us a DM — we’ll help you spec it right.

🛒 caltech.co.za
📞 065 083 8326
📧 [email protected]
📍 Randburg, Johannesburg

Load shedding doesn’t check your calendar. ⚡The EcoFlow RIVER Pro keeps your setup running through the outage — laptop, ...
14/08/2026

Load shedding doesn’t check your calendar. ⚡

The EcoFlow RIVER Pro keeps your setup running through the outage — laptop, monitor, router, lights — without missing a call.

• 720Wh capacity — real backup, not a power bank
• 600W continuous output, 1200W surge (X-Boost)
• Recharges 0–80% in under an hour

EcoFlow RIVER Pro | R4,999

Work doesn’t stop. Neither should your setup.

🛒 Shop online — link in bio
📦 Nationwide delivery

🛒 caltech.co.za
📞 065 083 8326
📧 [email protected]
📍 Randburg, Johannesburg

Most people size backup power by budget, not by actual load. That’s how you end up with a system that “should” last all ...
12/08/2026

Most people size backup power by budget, not by actual load. That’s how you end up with a system that “should” last all night — and doesn’t.

A fridge, router, and a few lights pull roughly 150–300Wh an hour. Pair a Lithtech 12V 200Ah battery (2560Wh) with a Victron Phoenix 12/1200 inverter, and you’re looking at around 8–12 hours of real backup — not a spec sheet number, a livable one.

Note: this setup is sized for a typical modern home fridge. Large, older, or side-by-side units draw a bigger startup surge and may need a bigger inverter — message us and we’ll help you size it properly.

Undersizing is the #1 reason backup systems disappoint people. Get it right the first time.

🛒 caltech.co.za
📞 065 083 8326
📧 [email protected]
📍 Randburg, Johannesburg

Real feedback from real customers. ⭐⭐⭐⭐⭐“The price is brilliant. The service is excellent. The delivery was faster than ...
07/08/2026

Real feedback from real customers. ⭐⭐⭐⭐⭐

“The price is brilliant. The service is excellent. The delivery was faster than expected.”
— JP Tromp, Google Review

5.0 stars across 7 Google reviews — and counting.

🛒 Shop the range at caltech.co.za
📦 Nationwide delivery | 📍 Randburg, Johannesburg

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35 Melda Road
Randburg
2195

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