Why choose a local battery bank supplier
Access to tested, in-country stock reduces project delays. As a South African supplier with branches in Samrand, Pretoria and Cape Town, Communica supplies battery banks in stock that suit student labs, field technicians, maker projects and small system integrators - with VAT invoices, branch pickup and account quoting options to simplify procurement. Stock depth and fast local collection beat long import lead times for critical builds.
Practical buying advantages
- Pick immediate stock at Samrand or check branch hours and collection at Branches & Trading Hours.
- Request VAT invoices and account quotes for departmental purchases or tertiary projects.
- Choose from portable power banks to rack-mount battery modules and compatible charging/management accessories.
Common use cases we support
Students building off-grid sensors, makers prototyping IoT nodes, technicians needing site power, and procurement teams sourcing reliable backup capacity all benefit from local stock and compatibility advice. For a quick view of product types we carry, browse our catalog at Collections (Shop by Category).
Key specifications and how to read them
When selecting a battery bank, map specifications to your application: capacity (Wh or mAh), nominal voltage, peak and continuous discharge current, chemistry (Li-ion, LiFePO4, SLA), charging method and integrated protection (BMS). Below is a compact comparison table showing typical options for makers and small systems.
| Type | Typical Use | Voltage | Energy Density | Cycle Life |
|---|---|---|---|---|
| Power bank (portable) | Mobile devices, field tools | 5V (regulated) | High | 300-800 cycles |
| Li-ion module | Prototyping, custom packs | 3.6-14.8V | Very high | 500+ cycles |
| LiFePO4 pack | Backup, longer life | 12.8V / 25.6V | Moderate | 2000+ cycles |
| SLA battery | low-cost UPS, legacy | 6V / 12V | Low | 200-500 cycles |
Use Wh (watt-hours) to compare energy across voltages: Wh = Ah × V. For example, a 12V 20Ah pack = 240Wh - handy when sizing runtime for a 24W load (240Wh / 24W = 10 hours ideal).
Quick formulas and an example
Ohm’s law and power basics remain useful when planning: V = I × R; P = V × I. To size a battery bank:
Required Ah = (Load power in W × Required hours) / (Battery voltage × DoD). Example for a 12V system, 24W load, 8 hours, 50% usable DoD: Required Ah = (24 × 8) / (12 × 0.5) = 32Ah.
Compare matched products and accessories using our shop-by-brand listing at battery bank quote - ideal when you need specific charger brands or BMS modules.
