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EZRED SP101 battery hydrometer, clear plastic body with scale, squeeze bulb and nozzle

EZRED SP101 Battery Hydrometer Factory

SKU CH-R4HP-94ZW7

Measures battery-acid specific gravity from 1.100 to 1.300 with a rugged, easy-read design

  • Team affiliation1 Piece
  • Key featuresSP101, Battery Powered, false
  • Overall height0.5 L x 11.4 W x 1.3 H inches
  • Overall width0.5 L x 11.4 W x 1.3 H inches
  • Overall length0.5 L x 11.4 W x 1.3 H inches
  • Product weight0.15 lb (0.07 kg)
  • Rugged build withstands garage and service-station use
  • 100 to 1.300 specific-gravity range shows cell charge state
  • No float reading or temperature tables needed
  • Compact 11.4-inch length fits tight battery compartments
  • Light 0.15-pound weight eases one-hand testing

Universal battery hydrometer

The EZRED SP101 is a battery hydrometer built for service stations and garages. It lets both the customer and the technician view the state of the battery acid directly. The tool is designed for professional battery technicians, mechanics and home DIY users.

Battery powered operation

The unit runs on battery power so there is no need for an external supply. This removes the difficulty of float reading and eliminates the requirement for temperature tables. The result is a quick and accurate reading of battery levels.

1.100 to 1.300 specific gravity range

The hydrometer covers a range of 1.100 to 1.300 so you can confidently know the state of charge for each battery cell. It handles standard lead acid cells comfortably and runs out when the specific gravity falls outside this window.

How it compares

Measured against everything we stock in Multimeters & Electrical Testers, at today’s prices. Recalculated every night.

Price $20.99
Cheaper than about 77% of the 971 comparable items (median $30.99).

Specifications

Product
Brand nameEZRED
Product typeAmp Meters & Probes
Size & build
Overall height0.5 L x 11.4 W x 1.3 H inches
Overall width0.5 L x 11.4 W x 1.3 H inches
Overall length0.5 L x 11.4 W x 1.3 H inches
Product weight0.15 lb (0.07 kg)
More details
Team affiliation1 Piece

Questions about this item

Does the SP101 hydrometer need calibration fluid or replacement floats over time?

The SP101 uses a direct-read scale from 1.100 to 1.300 with no float to replace and no calibration fluid required.

What stops the SP101 from giving a reading during back-to-back cell tests?

The 1.100–1.300 scale is the limiting factor; readings outside that range cannot be displayed.

Does the SP101 generate heat or need power during all-day shop use?

No battery or external power is needed, so the tool produces no heat and draws no current during continuous operation.

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