The Mastercool MC98210-BL is a Bluetooth charging scale for HVAC and refrigeration techs who charge by weight and want to watch the reading from their phone instead of crouching over the cylinder. It weighs to 110kg with 0.01kg resolution, so you can hit a target charge accurately on split systems, packaged units and commercial plant.

Program the charge you want, start the gas, and the scale alarms before you hit the target — giving you time to shut the supply off without overcharging. On a hot Aussie roof where the cylinder is metres from the manifold, watching the weight on your phone beats walking back and forth to read the dial.

Best for: refrigeration mechanics, split-system installers, commercial HVAC service techs, and refrigeration apprentices learning to charge by weight.

Compatible with: standard refrigerant cylinders up to 110kg total weight, and any refrigerant you charge by weight ⚠️ (confirm the refrigerant range against the Mastercool datasheet for your application). Pairs with the 98230 Charging Solenoid Module for pause/charge ⚠️ (sold separately — confirm stock). If you're running a different setup, check fittings and capacity before ordering.

Features

• Charge programming with pre-set alarm — set your target weight and the scale warns you before completion, so you close the supply before overcharging.
• Bluetooth monitoring — read and program the charge from your phone up to 80m line-of-sight, handy when the cylinder sits away from the unit.
• Pause/charge function — stop and resume mid-charge when paired with the 98230 Solenoid Module ⚠️ (sold separately).
• Tank capacity tracking — the EMPTY/FULL setting tells you how much refrigerant is left in the cylinder at a glance.
• Repeat charge — recall and re-charge a previously stored amount without re-keying it.
• 0.01kg resolution — fine enough to charge small split systems by weight without guesswork.

Technical Specifications

• Capacity: 110 kg
• Accuracy: ≤±0.05% of reading
• Resolution: 0.01 kg
• Platform: 22 × 22 cm (9 × 9")
• Operating temperature: 0 to 49°C
• Automatic shut-off: 3 hrs
• Battery life: approx. 40 hrs
• Power: 240V transformer (part no. 99334-220)
• Bluetooth® range: 80 m (260') maximum line-of-sight
• Bluetooth® version: 4.2 and 5
• Refrigerant compatibility: ⚠️ not stated in source — confirm against the Mastercool datasheet
• Weight: ⚠️ not supplied
• Materials: ⚠️ not supplied

What's in the Box

• Mastercool MC98210-BL Bluetooth charging scale (22 × 22 cm platform)
• ⚠️ Full box contents not supplied — confirm whether transformer (99334-220), case, and weighing platform leads are included before publishing.

Why "Programmable"

• Pre-set alarm before target — the warning fires before the charge completes, so you can shut the supply rather than chase an overshoot and have to recover the excess.
• 0.01kg resolution against 110kg capacity — fine increments across a large range mean it suits both small splits and bigger commercial charges.
• ≤±0.05% accuracy — tight enough that a charge-by-weight job lands on spec instead of guessing off a sight glass.
• Stored/repeat amounts — charging a run of identical units, you set it once and repeat, cutting keying errors across the day.

Using Your Charging Scale: Step-by-Step

1. Recover and evacuate the system first, then pressure-test and confirm it holds vacuum before you charge — refrigerant handling requires a current ARCtick licence.
2. Place the scale on a flat, stable surface and set the cylinder centred on the 22 × 22 cm platform.
3. Power the scale via the 240V transformer (99334-220) and pair it to your phone over Bluetooth.
4. Program your target charge weight, then use the EMPTY/FULL feature to confirm the cylinder holds enough refrigerant for the job.
5. Open the supply and charge by weight, watching the reading on the scale or your phone.
6. When the pre-set alarm sounds, close the refrigerant supply before the target is reached to avoid overcharging.
7. Disconnect, wipe down the platform, and store the scale dry and out of direct heat to protect the load cell.

Tradie Pro Tip: Set the alarm a touch below your target so you can close the supply on the trailing gas and still land on spec — saves recovering an overcharge on a hot day.

Limitations & Safety Notes

• Not for use on or near live electrical components — the scale is a weighing instrument, not rated for electrical work.
• Refrigerant handling requires a current ARCtick licence. This scale does not change that requirement.
• Follow AS/NZS 5149 for refrigeration safety and current Safe Work Australia guidance.
• Total cylinder + refrigerant weight must stay within the 110kg capacity.
• Operate between 0 and 49°C; readings outside that range may drift.
• Pause/charge needs the separate 98230 Solenoid Module ⚠️ — the scale alone does not stop the flow.

Mastercool Charging Scale FAQs

Why Buy From HVAC Shop

• Australian-based support — real trade staff who know charging gear.
• Genuine Mastercool stock with Australian warranty.
• Help with compatibility, fittings and the right transformer before you order.
• Fast Australia-wide shipping.
• Trade accounts welcome, with pricing on bulk orders.