I have a number of 7 AH Gel Cell batteries that mostly sit to the point that they get sulphated and no longer will take a charge. While studying DC permanent magnet Motors I've watched a number of YouTube videos of the "Bedini Motor" which is not really a motor but rather a battery charger desulfater. After looking into circuits for pure desulfaters it turns out that they are not a complete product like this one that does way more than just desulfate or charge.
Note this device will not work if the battery terminal voltage is below 2 Volts, in the case of the battery shown at the top of this page it started out at 3 Volts and the orange light at the bottom means it's desulfating. The manual says that might go on for a number of hours (started at 1:15).
The Optimate 3+ is made by Techmate, this one was re-branded by Honda (purchased from Motorsports of Ukiah a Honda dealer).
Includes a cable with alligator clips for direct battery charging
and a cable you can attach to a vehicle and leave attached
to make it easy to maintain it's battery.
Although there are many status LEDs that are no user controls. It's plug and play.
Fig 1 After connecting battery orange/red LED shows
1:15pm start desulfating
3:35pm now Yellow LED flashing = Verifying (may intermix with charge)
after running overnight the yellow LED is still flashing.
Disconnected battery, voltage now 9.5.
Connected another battery starting voltage 4.5 V.
Started out on orange/red LED some time later switched to blinking yellow.
The third battery ended up charged
green LED at right is on as well as
the green power LED on the left.
Battery Adapters I make
5 Station Battery Charger, Magnavox 706841-801 for PRC-68 family radio batteries
BT-2B TS-2530 Survival Equipment Battery Tester
DC pm Motors
Leclanché Battery Short History of the Flashlight Battery
Maha MH-C401FS AA/AAA Ni-MH Ni-Cad charger
Maha C777 Plus II Battery Charger, Analyzer, Cycler
Nickel-zinc NiZn Battery
PP-7286/U Battery Charger Time & Current
PP-7601 6 Station Battery Charger Navy/Marine charger for PRC-68 family radio batteries
PP-8249 SINCGARS Battery Charger, mainly for tanks
PP-8498/U Soldier Portable Charger (SPC) Multi-Port Universal Battery Charger
Propel BB-590 Battery Charger - this is where I saw that pulse charging works better than DC charging
PSM-13 Battery Test Set
Ready To Use Battery, Sanyo eneloop AA with long shelf life
Chemtronics LS 91 & LS 94 TS-4403/U & TS-4403A/U Battery State of Charge Meter LiSO2 7 to 9 AH
Triton2 Battery Charger Discharger Cycler
TS-183B/U Battery Tester & Large Table of Military Batteries
TS-23 Light Output & Battery Tester for SDU-5E Strobe Light
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web page Page created 24 Sep 2013.