That’s right, Joe. The cells in the battery packs are connected by four of these:
http://www.batteryspace.com/Smart-LED-Balance-Module-for-3.2V-LFP-Cell-with-250mA-Balance-Current.aspx They do NOT guard against over-discharge. I’d like to add a programmable battery voltage alarm. I’m having trouble finding a small one that doesn’t need to be connected to each cell in the pack. I’ll need to measure the output of the entire pack and alarm on that. I tried adding wiring to each cell and it did not work out well. - Doug From: rctankcombat@googlegroups.com [mailto:rctankcombat@googlegroups.com] On Behalf Of Joe Sommer Sent: Thursday, August 25, 2016 8:05 AM To: R/C Tank Combat <rctankcombat@googlegroups.com> Subject: Re: [TANKS] LiFePo4 Sources & Recommendations On Tuesday, August 23, 2016 at 9:46:41 PM UTC-4, RocketMan wrote: I got my 12.8v LiFePo4s from here: http://www.batteryspace.com/lifepo4-prismatic-battery-12-8v-20ah-256wh-10c-rate-24-0---un38-3-passed-dgr.aspx Doug, Is there a charging system on a small board in the top of the plastic case? It appears that you can connect directly to the positive and negative terminals of the four cells in series but does not show any connections to intermediate cells to monitor balance during charging. If there is a board, it does not provide low voltage cutoff because the description warns to not discharge below 10V which is below the recommended 2.8V per cell minimum for LiFePO4. Joe -- -- You are currently subscribed to the "R/C Tank Combat" group. To post a message, send email to rctankcombat@googlegroups.com <mailto:rctankcombat@googlegroups.com> To unsubscribe, send email to rctankcombat+unsubscr...@googlegroups.com <mailto:rctankcombat+unsubscr...@googlegroups.com> Visit the group at http://groups.google.com/group/rctankcombat --- You received this message because you are subscribed to the Google Groups "R/C Tank Combat" group. To unsubscribe from this group and stop receiving emails from it, send an email to rctankcombat+unsubscr...@googlegroups.com <mailto:rctankcombat+unsubscr...@googlegroups.com> . For more options, visit https://groups.google.com/d/optout. -- -- You are currently subscribed to the "R/C Tank Combat" group. To post a message, send email to rctankcombat@googlegroups.com To unsubscribe, send email to rctankcombat+unsubscr...@googlegroups.com Visit the group at http://groups.google.com/group/rctankcombat --- You received this message because you are subscribed to the Google Groups "R/C Tank Combat" group. To unsubscribe from this group and stop receiving emails from it, send an email to rctankcombat+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
