Guru
Joined: 08/11/2016
Location: AustraliaPosts: 814
| Posted: 10:23am 13 Aug 2018 |
As Far As I Know...
there is no issues with series charging SLA batts, apart from finding a 36v charger in your case (12 or 24v are far more common as is 48v)
Although you can indeed use 3 (identical) 12v chargers as well
They would have to be SLA chargers (NOT standard car battery chargers unless they have a SLA setting) max of 14.4v, 3A