Programmable Digital AH Meter (Blue LED). Ideal for Battery Monitoring

Price: $65.00
14 units available
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This meter is capable of calculating how much current (amp) is consumed in a minute or hour for up to 99 hours.


Displays toggle voltage, current, and amp-hrs.


It's designed for DC application like a battery charging system or for a solar system power output monitoring.


A great tool for electric car monitoring. See EVTV for electrical car conversion with this meter installed.

Key Features of the 404AH Battery Checking System


  • Alarm control for over/under limit
  • Programmable and expandable with external DC shunt for up to 9999A
  • Lowe power consumption
  • Display V, I, amp-Hr




  • Dual Alarm output (relay) J1,J2
  • Power: 12-32V DC
  • Default DC500V,5A
  • Max current: 9999A (an external shunt required)
  • Amp-Hr recording: 0.001~9999AH
  • Sampling: 3/s
  • Control Type: Relays
  • Relay: 3A@125VAC, 3A@14V DC
  • Display: Blue LED
  • Dimensions: 96mm x48mm x62mm
  • Mount Hole: 92mm x44mm x62mm

 Link for manual


Average rating 6 out of 10 ( based on 3 reviews )

A great product

Review by Lisa on 3/17/2012

This is a great meter, just the job for Ah counting in EV's, with excellent, programable relay outputs for controlling warning systems or charger shut off at a given voltage etc. Although the Documentation could be better.


Review by Paul on 8/29/2015

My meter failed after only 2 1/2 years of very light use, display started to flicker on and off, then it failed altogether, probably a dry solder joint letting something go open circuit :(

Poor Support

Review by Raghavendra on 11/3/2015

My meter received failed during Power ON where some of the segments were not being turned ON. I have written to sales team and they sent a reply asking me to send the picture. When I have sent picture and sent several reminders to Lightobject but no reply. Hope after seeing this review I get some urgent support in this.

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