# 72V(83V) Trickle Charger for Pb batteries **URL:** \ **Category:** GEM Forum\ **Created:** [February 13, 2018, 12:44am UTC](https://community.electricforum.com/t/72v-83v-trickle-charger-for-pb-batteries/13318 "2018-02-13T00:44:41Z")\ **Posts on this page:** 7\ **Page:** 1
**Author:** ![dougl](https://avatars.discourse-cdn.com/v4/letter/d/b19c9b/32.png) [@dougl](https://community.electricforum.com/u/dougl)\ **Post date:** [February 13, 2018, 12:44am UTC](https://community.electricforum.com/t/72v-83v-trickle-charger-for-pb-batteries/13318/1 "2018-02-13T00:44:41Z")
Since I installed a remote/wireless voltage and current meter on the 2002 I’m noticing a slight loss of performance after it sits for a couple of days and the battery voltage as settled down to 12.6 or so volts. I know I can send my Zivan charger in and for a few hundred dollars they will add the trickle charger feature to it but for $20 I found a DC-DC converter which will do 83V at 10A with both current and voltage adjustments. 10-60VDC input. i’m thinking of building or getting a simple 100W DC power supply to power this converter and having it turn on 6 hours or so after power is applied and set to 83V 1-2A. Any comments, insights etc welcome. ---
**Author:** ![LithiumGods](https://yyz2.discourse-cdn.com/flex030/user_avatar/community.electricforum.com/lithiumgods/32/672_2.png) [@LithiumGods](https://community.electricforum.com/u/LithiumGods)\ **Post date:** [February 13, 2018, 2:21am UTC](https://community.electricforum.com/t/72v-83v-trickle-charger-for-pb-batteries/13318/2 "2018-02-13T02:21:16Z")
you can also put on a cheap wall timer that will turn on every day for 20 min to top off batteries ---
**Author:** ![dougl](https://avatars.discourse-cdn.com/v4/letter/d/b19c9b/32.png) [@dougl](https://community.electricforum.com/u/dougl)\ **Post date:** [February 13, 2018, 3:24am UTC](https://community.electricforum.com/t/72v-83v-trickle-charger-for-pb-batteries/13318/3 "2018-02-13T03:24:42Z")
yes but I was considering it would be better all around keeping it up at 13.4V instead of letting it drop and then boosting it with the Zivan charger over and over. ---
**Author:** ![Inwo](https://yyz2.discourse-cdn.com/flex030/user_avatar/community.electricforum.com/inwo/32/1067_2.png) [@Inwo](https://community.electricforum.com/u/Inwo)\ **Post date:** [February 13, 2018, 3:30am UTC](https://community.electricforum.com/t/72v-83v-trickle-charger-for-pb-batteries/13318/4 "2018-02-13T03:30:33Z")
I lost track of what’s good for lead batteries. Is it good to keep topped off over 13v ? Could be, 🤔 But if you want performance, add a battery. Then you’re always over 80 volts. ---
**Author:** ![dougl](https://avatars.discourse-cdn.com/v4/letter/d/b19c9b/32.png) [@dougl](https://community.electricforum.com/u/dougl)\ **Post date:** [February 13, 2018, 3:46am UTC](https://community.electricforum.com/t/72v-83v-trickle-charger-for-pb-batteries/13318/5 "2018-02-13T03:46:23Z")
I really should just sell the batteries for what ever I can get( 1 yr old ) and go Lithium… Which I believe also requires my zivan be sent in for an upgrade so it can be adjusted to charge the lithiums. ? I think I mentioned, there’s a guy in our EV group who can get brand new Leaf battery cells. I’ll have to ask the price. ---
**Author:** ![dougl](https://avatars.discourse-cdn.com/v4/letter/d/b19c9b/32.png) [@dougl](https://community.electricforum.com/u/dougl)\ **Post date:** [February 13, 2018, 4:14am UTC](https://community.electricforum.com/t/72v-83v-trickle-charger-for-pb-batteries/13318/6 "2018-02-13T04:14:15Z")
holding the batteries at 13.4 keeps them 100% charged and eliminates any internal self discharging and any onboard quiescent discharging. ---
**Author:** ![dougl](https://avatars.discourse-cdn.com/v4/letter/d/b19c9b/32.png) [@dougl](https://community.electricforum.com/u/dougl)\ **Post date:** [March 8, 2018, 9:59pm UTC](https://community.electricforum.com/t/72v-83v-trickle-charger-for-pb-batteries/13318/7 "2018-03-08T21:59:21Z")
My charger finally arrived. I have a 24V 5A( 120W ) power supply( is for an electric wheelchair ) I will use to tesst. The plan is to put a diode on the Pos ouput and run it in parallel with the Zivan charger for the test. The diode drops .7V so I will set it for 80V( which I think is the max for this charger ). At peek it should put out just over 1A but at full charge I’m hoping it’ll be less than 1A but I will be testing that too. The diode is so that the higher charging voltage of the Zivan doesn’t effect the trickle charger should it kick on. I don’t expect it to and I plan on having this trickle charger depowered for 6 hours after AC is plugged in. Plenty of time for the Zivan to fully charge and turn off.