Hi! after a year of snorkeling with TDI BH I concluded that I can clearly note the sensitivity goes down ones the voltage of my battery pack goes down.
Other conclusion was that even at 12.6V the TDI BH is noisy underwater at maximum settings: it reacts to the waves.
Thus at the moment I really prefer to have just a stabilized battery pack. For my experiment I took a couple of 21700 5aH Li-Ion cells and a dc-dc booster board.
the plan is to get "one hunt" battery pack.
I was looking for battery tray design for my Tdi SL which would allow 4 x 18650 batteries. As luck would have it on the local Prospecting Australia website XLOOX posted a simple mod for a Whites factory battery tray. I don't know how to post links so the full description is to be found in the Prospecting Australia site. Simple cut out the guts of the tray, leaving the original battery connectors with mods on one end and a copper connector on the other. I can fit Panasonic NCR18650B cells, without nipples but with protection. They just fit snuggly. The only issue is closing the lid, you need to cut a channel under the batteries into the base of the tray to allow for this. I'll cover this with a thin carbon fibre sheet and look at using a thinner sheet for the cover also. I will also add something to secure the batteries in position. Just waiting for the postman to deliver my carbon fibre sheet before finishing my own version of XLOOX's design. What I like most is that this is simple and cheap. Must confess I am aware of many different designs, since there have been no reports of smoking Tdi Sl machines I have finally decided to give it a go.
All the best, Karelian
By Steve Herschbach
Detector center is doing replacement batteries with longer run times for $40.
188 Oak Shade Road
Alum Bank, PA 15521
I recently purchased these https://amzn.to/2yTnMWc
They are the proper 1.5 volt and lithium batteries. They work well in my Tesoro that tends to chew up batteries fairly quickly. Will see how they hold up. They should not fade in performance as regular Alkalines do.
$20 for 4 is pretty good. Much less than the $80 I paid for my AT Pro lithium pack.
Hi folks, so I've ordered myself a TDI SL and spent a few hrs on line trying to find anyone that ships the RnB innovations 14.4v battery to Australia which proved to be an impossible task. So I went on to try and find the highest capacity longest lasting AA batteries for the dry pack and came across the Kentli 1.5v 3000mWh rechargable lithium polimer batteries. I have to say it looks like a brilliant idea but some of the reviews I seen aren't all that great. Now being aware that a lot of reviews are probably BS of one kind or another I have to ask who here has heard of or tried these? The idea of getting a constant 12v in the machine is appealing. Would be good to see some of you electrical gurus out there put them to the test?