Not a TriMetric, but for $20 might be worth trying out...
Bayite DC 6.5V-100V Digital ammeter voltmeter Amazon suggested this for me and I'm thinking for $20 I might just give it a try. Has very good reviews too.
Forum Discussion
Salvo wrote:
According to the spec, that meter can't measure both ways. It states 0 to 20A. If it can measure current in both directions it would state -20 to 20A.brulaz wrote:
I do want the meter to measure net Ah, from both loads and charge sources.
This is the (+-) 100A one I ordered:
http://www.ebay.com/itm/DC-120V-100A-Voltage-Current-Ah-Time-Meter-Battery-Charge-Discharge-AGM-SLA-LEAD-/180957166631
