Re: [EVDL] Drop-in li-ion replacements for PbSO4

2020-03-28 Thread Alan Arrison via EV
Exactly, hospital aren't buying some no name Chinese garbage. Any lithium battery, drop in or not, has to have an onboard BMS for safety. On 3/28/2020 6:10 PM, Lawrence Rhodes via EV wrote: The liability if something goes wrong is untenable. All the lithium drop in types which feature exact ca

Re: [EVDL] Drop-in li-ion replacements for PbSO4

2020-03-28 Thread Lawrence Rhodes via EV
The liability if something goes wrong is untenable. All the lithium drop in types which feature exact case sizes have BMS appropriate to use. That is cell voltages when in series match 12, 24, 48 or 72volt batteries. Many of these were developed for use in portable hospital devices which worked

Re: [EVDL] Drop-in li-ion replacements for PbSO4

2020-03-28 Thread EVDL Administrator via EV
On 28 Mar 2020 at 10:30, Willie via EV wrote: > Several suggest special LFP chargers. That rather contradicts "drop in > lead replacement". I looked into these a few years ago. IIRC, none of them bore a brand name that I recognized. Some suggested using simple wall warts for charging, which

Re: [EVDL] Drop-in li-ion replacements for PbSO4

2020-03-28 Thread Willie via EV
On 3/27/20 9:47 PM, Alan Arrison via EV wrote: Do these so called "drop in replacements" mention having onboard protection/balancing circuits? Several suggest special LFP chargers. That rather contradicts "drop in lead replacement". If they don't mention it in their literature, I would st