| Products > Test Equipment |
| The attempt of a Micsig (A/S)TO11xx general purpose thread ... :-) |
| << < (13/20) > >> |
| rvalente:
True, they have good email support, I've been exchanging some with them. @Pfriemler already a dead battery? Did you use it a LOT, did not use at all? Is this battery that old to already to be gone? |
| Fraser:
The battery may have been allowed to discharge below its safety cut off voltage that effectively isolates the battery from the scope. In some cases it is possible to carefully apply power to the battery cell string directly (not via the battery management PCB) to slowly bring the cells above the safety cutoff threshold and the battery management will enable the Power MOSFETS again to reconnect the battery to the scope. There are some cautions associated with such action though. 1. An isolated battery is isolated for a reason, either over discharge or a fault in the cell string. 2. Re-enabling an isolated cell string can ‘re-activate’ cells that have been damaged by over discharge and risks cell swelling or failure. 3. Only a voltage and current controlled power supply should be applied directly to the cells and only at a sensible current for long enough to bring each cell up to at least 3.4V. Then use the scopes charging circuit to complete the charge cycle. 4. An isolated battery is isolated for a reason …. This is worth repeating ! That said, many Li-Ion/Poly batteries may be brought back to life without safety consequences but some capacity may be lost. 5. Some batteries cannot be brought back from over discharge as cells have degraded and the battery management IC detects this and permanently locks out the battery rendering it scrap. Fraser |
| Micsig_support:
--- Quote from: rvalente on November 11, 2021, 01:03:46 pm ---#1 - Does anyone know how many FFT points the 1104C and 1104E have? I can't find this anywhere #2 - Can it operate without battery? This battery will die in a few years. --- End quote --- above is the one video for FFT for your FYI. if the battery die, pls contact your near local distributor. now, we have some stocks in different countries. do not be worry. |
| rvalente:
--- Quote from: Micsig_support on November 16, 2021, 08:46:58 am --- --- Quote from: rvalente on November 11, 2021, 01:03:46 pm ---#1 - Does anyone know how many FFT points the 1104C and 1104E have? I can't find this anywhere #2 - Can it operate without battery? This battery will die in a few years. --- End quote --- above is the one video for FFT for your FYI. if the battery die, pls contact your near local distributor. now, we have some stocks in different countries. do not be worry. --- End quote --- I appreciate the video but, could you please officially confirm: #1 - Number of FFT points #2 - Behavior with a dead battery |
| nctnico:
--- Quote from: rvalente on November 11, 2021, 01:03:46 pm ---#1 - Does anyone know how many FFT points the 1104C and 1104E have? I can't find this anywhere #2 - Can it operate without battery? This battery will die in a few years. --- End quote --- Why do you say the battery dies in a few years? If you don't drain the batteries empty and store the oscilloscope with some charge in it, I see no reason why the batteries won't last at least a decade. Li-ion is infinitely better compared to NiCd or NimH in that respect. I have a TO1104 for 4 years now and the battery is still fine. And like others have pointed out: the battery is an option so the oscilloscope can also work without it. |
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